GCS_City_Hall_Generator_Replacement_-_Electrical_Specifications_240826.pdf
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- Attached to
- City Hall Generator Upgrade State and local contract opportunity
- Solicitation number
- 2024-08
- Issued by
- Clay County, Harold CDP, Florida
About this file
These electrical specifications detail the requirements for the City of Green Cove Springs City Hall Generator Replacement Project, prepared by Evanlily Engineering on August 26, 2024. The comprehensive technical document covers multiple electrical sections including basic electrical requirements, general electrical works, grounding and bonding, engine generators, and transfer switches for a standby diesel generator system. The project involves installing a new 250 kW diesel generator with a 313 kVA rating, designed to operate at 1800 RPM and provide 48-hour fuel storage capacity, with a basis of design being the Cummins C250DQDAA model.
The specifications outline rigorous technical requirements for the generator set, including detailed provisions for cooling systems, accessories, controls, instruments, fuel systems, and weatherproof enclosures. The generator is intended to provide emergency power for the entire City Hall facility, with specific requirements for automatic transfer switches, surge protection, and comprehensive testing protocols. The project includes provisions for manufacturer training, spare parts supply, and a five-year warranty on the diesel generator, with additional 30-year warranty on the fuel storage tank. The technical specifications ensure a robust, reliable emergency power solution with precise performance standards, comprehensive testing requirements, and detailed installation guidelines.
View the file
Other files for this state and local contract opportunity
| File | Type | Posted |
|---|---|---|
| green_cove_mec250_quote_11-21-2024_Estimate10556032.pdf | ||
| Form_W-9_(PDF).pdf | ||
| GCS_City_Hall_Generator_Replacement_-_Electrical_Drawings_240826.pdf | ||
| 4486-101-R-Executed_Contract_8-17-2023.pdf | ||
| RFP_2024-8,_City_Hall_Generator_Upgrade.pdf |
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Text version
No 73859
STATE OF
ALNOISSEF
O
R P
ENGIN
E
E R
RO IL D
F A
CLI ENSE
WELLSFR
ANK E.
THIS DOCUMENT HAS BEEN DIGITALLY
SIGNED AND SEALED BY:
PRINTED COPIES OF THIS DOCUMENT ARE
NOT CONSIDERED SIGNED AND SEALED.
THE SIGNATURE MUST BE VERIFIED ON
THE ELECTRONIC DOCUMENTS.
| Spec Cover |
| 16000 - Basic Electrical Requirements |
| 1.01 SECTION INCLUDES |
| A. General Information on the Electrical Installation not covered elsewhere. This section applies to all other electrical sections. |
| 1.02 SCOPE |
| A. It is the intent of DIVISION 16 to outline the electrical requirements of the Contract. The complete scope of work covers the furnishing, installation, testing, adjusting, and placing in operation all electrical equipment, devices, facilities, materials, and auxiliary items necessary for the complete and successful operation of all electrical equipment as herein described, shown on the plans, or deemed necessary for the completion of the electrical portion of the project. |
| B. The Electrical CONTRACTOR may be working directly for the ONWER and / or a General CONTRACTOR. |
| 1.03 PROTECTION OF ELECTRICAL EQUIPMENT |
| A. Electrical equipment shall be protected from the weather during shipment, storage, and after installation in accordance with manufacturer’s requirements and recommendations. Should any equipment be subjected to damage through water penetration, it shall be thoroughly dried out and put through a dielectric test, at the expense of the CONTRACTOR. The results of the test shall be submitted to the ENGINEER for review and approval. Equipment deemed unsuitable for continued operation shall be replaced by the CONTRACTOR at no additional cost to the OWNER. |
| B. The OWNER has the first right of refusal for existing equipment or materials to be removed by the CONTRACTOR and salvaged for reuse by the OWNER. Removal of existing equipment or materials shall be done with precaution to prevent damage and facilitate potential reuse by the OWNER. |
| 1.04 UTILITIES |
| A. The electrical CONTRACTOR shall install a fully operational electrical service as described in the plans. Coordinate with the utility company for the services and install the services in accordance with their requirements, regulations and recommendations. CONTRACTOR shall include with their bid and be responsible for payment of all electrical service permit fees and inspection fees. |
| 1.05 WARRANTY |
| A. The CONTRACTOR shall warrant all lighting for a period of one (1) year after the date of substantial completion. Guarantee shall include material and labor for re-lamping. |
| B. The CONTRACTOR shall warrant all other electrical systems, materials, and workmanship to be free from defects for a period of one (1) year from the date of substantial completion unless noted otherwise or in accordance with OWNER requirements. He shall correct all defects arising within this period upon notification by the OWNER or ENGINEER, without additional compensation. |
| C. It is understood that the rights and benefits given to the OWNER by the guarantees found in the technical specifications are in addition to and not in derogation of any rights or benefits found in the special and general provisions of the Contract. |
| 1.06 TEMPORARY POWER AND LIGHTS DURING CONSTRUCTION |
| A. It shall be the responsibility of the CONTRACTOR to provide and maintain adequate temporary power and lighting at all times during construction, so that the various other trades can accomplish their work in a flawless manner and to maintain at all times plant operations. |
| 1.07 CONSTRUCTION SEQUENCING |
| A. It is the responsibility of the CONTRACTOR to determine the means and methods for construction sequencing to ensure continuous operation of the existing facilities where required. Coordinate existing facility outages with the OWNER a least two weeks in advance to prevent impact to normally required operations. Outages which result in loss of use or financial burden to the OWNER shall be the responsibility of the CONTRACTOR to remedy at the direction and approval of the OWNER. |
| 1.08 REFERENCES |
| A. ANSI/NFPA 70 – National Electrical Code |
| B. ANSIC2 – National Electrical Safety Code |
| C. NEMA – National Electrical Manufacturer's Association |
| D. UL – Underwriters Laboratories |
| E. NFPA – National Fire Protection Association |
| F. IEEE – The Institute of Electrical and Electronics Engineers |
| G. IESNA – The Illuminating Engineering Society of North America |
| H. NETA – International Electrical Testing Association |
| I. Standards for Water and Wastewater Facilities as published by the OWNER |
| J. AHJ – Authority Having Jurisdiction standards and requirements including permitting and fees. |
| 1.09 SUBMITTALS |
| A. The CONTRACTOR shall review and approve all shop drawings prior to submittal to the OWNER and / or ENGINEER for review. As part of the review, the installer shall certify that the provided equipment or components shown and marked in the submittal are in compliance with the Contract drawing and specifications, can be installed in the allocated space, will be stored in accordance with the manufacturer’s recommendation, and will be installed per NEC. |
| B. Submit Shop Drawings, catalog sheets, or other descriptive data with sufficient information to establish design, quality and performance. Data shall describe apparatus, equipment, panels, fixtures, and other items requiring descriptive literature. Provide submittals as a single package and grouped based on specification section. Submittals items shall be in accordance with the individual specification sections. See Administrative Requirements section for more information on submittals. |
| C. Collect and neatly retain maintenance and service data supplied with equipment furnished and installed under this Contract until job completion, at which time deliver to the General CONTRACTOR for inclusion in the Maintenance Manual. All such data must be properly identified as for equipment served. |
| 1.10 AS-BUILT DRAWINGS |
| A. The As-Built drawings shall include detailed drawings of all duct banks, underground conduit, above ground conduit, motor control centers, PLC control panels, control drawings. Drawings shall indicate the exact location of all duct banks, underground electrical wiring, and fiber optic cable. |
| B. The location shall indicate the following: |
| 1. Centerline location |
| 2. Width / Cross section |
| 3. Depth |
| C. Upon request, the ENGINEER will provide an electronic PDF copy of the conformed construction drawings for use by the CONTRACTOR. |
| 1.11 COORDINATION - GENERAL |
| A. Drawings are generally diagrammatic. Review all project Drawings and coordinate all work with CONTRACTOR and different trades prior to installing any work so that interferences between electrical work and ducts, piping, equipment, architectural and structural work will be avoided. Do not install conduits, boxes and fittings in spaces required for ductwork or piping. |
| B. Furnish all necessary offsets in raceways, fittings, etc., required to properly install work so as to take up minimum space. Install all equipment to provide code required "working space". Furnish and install all materials required to accomplish this without additional cost. |
| C. In case interference develops, the General CONTRACTOR will decide which trade work must be relocated regardless of which was installed first. Damage from interference or rework caused by inadequate coordination with other trades shall be rectified without additional cost to the OWNER. |
| D. Within 30 days following award of Contract, report to the General CONTRACTOR in writing all real or potential errors, ambiguities and/or conflicts on electrical work or between trades. Those reported after 30 days, except as a result of unforeseen circumstances, shall be resolved at the discretion of the General CONTRACTOR. Report conflicts resulting from progress of work to the General CONTRACTOR immediately. |
| 1.12 COORDINATION – ELECTRICAL/MECHANICAL |
| A. Unless specifically required otherwise, all motors, starters, control and monitoring devices, timers, relays, pilot devices and other required control components integral to mechanical systems will be furnished and installed by the Mechanical CONTRACTOR. |
| B. Unless specifically required otherwise, make all power wiring connections to all water heaters, pumps, machinery, appliances, water coolers and other electrically operated equipment as indicated on the Drawings or as required. Furnish and install disconnect switches, starters and protective devices as indicated on the Drawings, except for items furnished with / and integral to mechanical equipment. Coordinate the exact location of receptacles, flexible conduit, and disconnects for mechanical and plumbing equipment with the mechanical or plumbing CONTRACTOR. |
| C. Review approved Shop Drawings and verify final electrical characteristics and wiring before rough-in of power feeds to any equipment. When electrical data on approved Shop Drawings differs from contemplated design, make necessary adjustments to wiring, disconnect, and branch-circuit protection for equipment actually installed. Notify the OWNER and / or ENGINEER where significant discrepancies are observed. |
| 1.13 WORKING CLEARANCES |
| A. Working clearances and dedicated space around electrical equipment requiring service shall comply with NEC requirements. Coordinate and verify clearances from equipment and work furnished by other trades. Should there be any apparent violations of clearance requirements, notify the ENGINEER before proceeding with connection or placement of equipment. Rework caused by inadequate coordination shall be rectified at no extra cost. |
| B. For power distribution equipment, control equipment, and other equipment requiring wire and cable terminations, the CONTRACTOR shall ascertain that lug sizes and wiring gutters or space allowed for proper accommodation and termination of the wires and cables are adequate. |
| 2.01 MATERIAL STANDARDS |
| A. All materials used in this project shall be new, unless otherwise noted, and listed by the Underwriters' Laboratories, Inc. as conforming to its standards where such standards have been established. These materials shall bear the UL label. |
| B. Before purchasing any equipment, the CONTRACTOR shall reconfirm the availability of the project's voltage, phase (single phase versus three phase), and service configuration with the electric utility. |
| C. Material shall be new and comply with standards of Underwriters' Laboratories, Inc., where standards have been established for the particular product and the various NEMA, ANSI, ASTM, IEEE, AEIC, IPCEA or other publications referenced. |
| 3.01 TEST EQUIPMENT |
| A. The CONTRACTOR shall provide all test equipment and supplies deemed necessary to perform the required testing at no extra cost to the OWNER. These supplies shall include such things as: volt meters, amp meters, clamp-on ground rod test meter, light meters, generator load banks and temporary cables, watt meters, harmonic distortion test equipment, thermal image camera, megger tester, high pot test equipment, power quality analyzers, recording power meter, and oscilloscopes. |
| 3.02 FINAL INSPECTION AND TESTING |
| A. After the electrical installation is complete, the CONTRACTOR shall deliver to the OWNER and / or ENGINEER the following information with his request for final inspection. |
| 1. One set of Contract drawings marked to show all significant changes in equipment ratings and locations, alterations in locations of conduit runs, or of any data differing from the Contract drawings. This shall include revised or changed panelboard and electrical gear schedules. |
| 2. Certificates of final inspection from the AHJ. |
| 3. A tabulation of all motors listing their respective manufacturer, horsepower, nameplate voltage and current, actual running current after installation and overload heater rating. |
| B. The electrical work shall be thoroughly tested to demonstrate that the entire system is in proper working order and in accordance with the plans and specifications. Each motor with its control shall be run as nearly as possible under operating conditions for a sufficient length of time to demonstrate correct alignment, wiring capacity, speed and satisfactory operation. All main switches and circuit breakers shall be operated, but not necessarily at full load. The CONTRACTOR may be required during final inspection, at the request of the OWNER and / or ENGINEER to furnish test instruments for use during the testing. |
| C. All wiring less than 600 Volt AC shall be given a megger test using a 1000 Volt megger. This test shall be performed after conductors are pulled, but before final connections are made. The OWNER and / or ENGINEER shall be given two (2) days' written notice of the anticipated test date so that he may witness the test if so desired. In any event, the CONTRACTOR shall record the circuit designation and the megger reading on each phase. This written record shall be submitted to the OWNER and / or ENGINEER. The cost of this test or any retest caused by insufficient megger readings shall be the responsibility of the CONTRACTOR (All tests shall be done in accordance with NETA Standards). |
| 3.03 CLEANUP |
| A. After electrical installation, remove all rubbish, trash and debris from the site and dispose of it in an approved manner. |
| 16010 - General Electrical Works |
| 1.01 DESCRIPTION OF WORK |
| A. In general, the work specified in this division of the specifications includes the furnishing of all labor, material, auxiliaries, and services necessary to install complete and properly operating electrical systems, including all fees, charges, and permits necessary. |
| B. The CONTRACTOR shall furnish and install all cables, conductors, conduits, wiring devices, lighting fixtures, motor controllers, safety switches, relays, control equipment, and all other apparatus and accessories indicated, specified, and / or required for complete lighting, power, control and instrumentation systems for the project facilities. |
| C. The CONTRACTOR shall refer to every section of these specifications for installation and coordination requirements applicable to the work specified in this division. The CONTRACTOR shall furnish and install all wiring and connections to all electrical equipment furnished under other sections of these specifications, except where specified or indicated otherwise. |
| D. The CONTRACTOR shall coordinate all electrical work with other project construction trades, installation requirements, sequence of construction schedule, etc., including coordination and installation of required conduit sleeves and supporting devices. |
| E. The CONTRACTOR shall be required to coordinate all electrical system connections with each appropriate utility company and shall furnish and install all equipment or material necessary to provide complete electrical and communications service in accordance with all utility company requirements. |
| 1.02 GENERAL REQUIREMENTS |
| A. Design drawings are diagrammatic and intended to show approximate installation and equipment locations. All dimensions shall be verified in the field and coordinated with shop drawings issued. Equipment schedules are intended to serve as a guide only and does not relieve the CONTRACTOR of the responsibility for the complete furnishing and installation of all wiring, cable, conduits, or additional apparatus required. |
| B. The CONTRACTOR shall furnish and install reinforced concrete pads, for electrical equipment, of the size as shown on the drawings or as required. Unless noted otherwise, pads for indoor equipment shall be 4 inches high and exceed the equipment dimensions by 3 inches on all sides not flush to a wall; pads for outdoor equipment shall be a minimum of 12 inches thick and exceed the equipment dimensions by 2-1/2 feet on sides equipped with door access and 6 inches on all remaining sides. Motor control centers, switchboards, etc., located indoors and equipped with a wireway at the base, shall be centered on a continuous reinforced concrete curb, minimum 6 inches high with 3 inch overhand on all sides. The Pad shall have a recessed conduit window or trough for conduit stub-ups and horizontal wire routing between electrical equipment cabinets. |
| C. The CONTRACTOR shall furnish and install a system of engraved, laminated nameplates (black lettering on a white background), designed to identify each major piece of equipment. |
| D. Motors will be furnished with the equipment they drive unless indicated otherwise. Motors shall be premium efficiency design. Motors located outdoors or within corrosive environments shall be severe duty construction. Unless noted otherwise, motor controllers shall be provided by the motor supplier to match the drive to the motor. |
| E. The CONTRACTOR shall remove all existing electrical equipment within areas identified and shall return all reusable material to the OWNER as directed by the OWNER. Equipment feeder conductors shall be removed up to the first remaining circuit disconnect. Equipment removal shall be coordinated with the approved construction sequencing schedule. |
| F. All electrical equipment exposed in wet wells, or otherwise subject to accelerated corrosion, shall be furnished as specified for "corrosive atmospheres". |
| G. All electrical equipment and installation within hazardous areas shall comply with the requirements of the National Electrical Code for Class I, Division 1, Hazardous Locations. |
| 1 |
| 2.01 MATERIALS |
| A. All material shall be new and shall conform with the standards of the Underwriter's Laboratories, Inc., American National Standards Institute, National Electrical Manufacturers' Association, Insulated Power Cable Engineers Association, and Institute of Electrical and Electronic Engineers in every case where such a standard has been established for the materials in question. |
| B. The use of a manufacturer's tradename and catalog number is not intended to indicate preference but only the type and quality of the product desired. Products of reputable manufacturers of equal quality and functional type will be acceptable. Substitutes which tend to lower the quality of the work will not be permitted. |
| C. Acceptance of alternate equipment does not relieve the CONTRACTOR of the responsibility of compliance with the performance and accuracy requirements of these specifications. Where such substitutions alter the design or space requirements indicated on the Contract Drawings, detailed drawings shall be prepared and submitted by the CONTRACTOR delineating any changes in or additions to the work shown on the Contract Drawings, and such drawings and changes or additions to the work shall be made by the CONTRACTOR at no additional expense to the OWNER. In all cases, the burden of proof that the material or equipment offered for substitution is equal in construction, efficiency, and service to that named on the Contract Drawings and in these Contract Documents shall rest on the CONTRACTOR and, unless the proof is satisfactory to the ENGINEER, the substitution will not be approved. |
| D. Wherever possible, equipment items having the same or similar rated capacity or function shall be identical. |
| E. All equipment and apparatus shall be the manufacturer’s latest proven design, neither presently scheduled for obsolescence nor developmental prototype. |
| F. All electrical apparatus and lighting equipment shall follow the Federal Energy Policy Act of 1992, including all subsequent updates, revisions, and replacements. |
| 2.02 IDENTIFICATION |
| A. Raceways, Conductors, and Metal Clad Cable: All raceways shall be labelled in accordance with ANSI standards and shall include a suitable combination of the following: |
| 1. Self-Adhesive Vinyl Labels: Preprinted, flexible label laminated with a clear, weather- and chemical-resistant coating and matching wraparound adhesive tape for securing ends of legend label. |
| 2. Snap-Around Labels: Slit, pretensioned, flexible, preprinted, color-coded acrylic sleeves, with diameter sized to suit diameter of raceway or cable it identifies and to stay in place by gripping action. |
| 3. Self-Adhesive Vinyl Tape: Colored, heavy duty, waterproof, fade resistant; 2 inches wide; compounded for outdoor use. |
| 4. Aluminum Wraparound Marker Labels: For use in below grade manholes and handholes. Cut from 0.014-inch- thick aluminum sheet, with stamped, embossed, or scribed legend, and fitted with tabs and matching slots for permanently securing around wire or cable jacket or around groups of conductors. |
| B. Warning Labels: Provide warning labels for cabinets, boxes, and enclosures for power and lighting systems in accordance with OSHA 29 CFR 1910.145 or NFPA 70 as required. |
| C. Identify system voltage with black letters on an orange background. Apply to exterior of door, cover, or other access. |
| D. Equipment with Multiple Power or Control Sources: Apply to door or cover of equipment including, but not limited to, the following: |
| 1. Power transfer switches. |
| 2. Controls with external control power connections. Equipment Requiring Workspace Clearance According to NFPA 70: Unless otherwise indicated, apply to door or cover of equipment but not on flush panelboards and similar equipment in finished spaces. |
| E. Self-Adhesive Warning Labels: Factory printed, multicolor, pressure-sensitive adhesive labels, configured for display on front cover, door, or other access to equipment, unless otherwise indicated. |
| F. Baked-Enamel Warning Signs: Preprinted aluminum signs, punched or drilled for fasteners, with colors, legend, and size required for application. 1/4-inch grommets in corners for mounting. Nominal size, 7 by 10 inches. |
| G. Metal-Backed, Butyrate Warning Signs: Weather-resistant, nonfading, preprinted, cellulose-acetate butyrate signs with 0.0396-inch galvanized-steel backing; and with colors, legend, and size required for application. 1/4-inch grommets in corners for mounting. Nominal size, 10 by 14 inches. |
| H. Warning label and sign shall include, but are not limited to, the following legends: |
| 1. Multiple Power Source Warning: "DANGER - ELECTRICAL SHOCK HAZARD - EQUIPMENT HAS MULTIPLE POWER SOURCES." |
| 2. Workspace Clearance Warning: "WARNING - OSHA REGULATION - AREA IN FRONT OF ELECTRICAL EQUIPMENT MUST BE KEPT CLEAR FOR 36 INCHES." |
| I. Equipment Identification Labels: Label all equipment including but not limited to junction boxes, control panels, disconnect switches, power distribution panels, transformers, transfer switches, switchboards, motor control centers, and other similar equipment. |
| J. Identification shall be engraved, laminated acrylic or melamine labels, punched or drilled for screw mounting. Identification labels shall have black letters on a white background. Unless otherwise indicated, provide a single line of text with 1/2-inch high letters on 1 1/2-inch high label; where 2 lines of text are required, use labels 2 inches high. Mount labels with stainless hardware. Labels for field mounted equipment shall include the name of the equipment, and the location from which power is fed. |
| K. Elevated Components: Where not readily accessible from the ground level, increase the size of the labels and letters to those appropriate for viewing from the ground level. |
| 2.03 RACEWAYS |
| A. Metallic Conduit (Aluminum): All conduit shall be heavy wall rigid aluminum of standard pipe weight unless noted otherwise. |
| 1. Couplings, conduit unions, conduit fittings, etc., shall be aluminum, shall have conventional trade dimensions, and shall be internally threaded with a tapered thread at each end to fit the tapered thread specified for the corresponding size conduit. Conduit outlet body covers shall be cast construction. |
| 2. All conduits, couplings, and fittings run exposed to corrosive atmospheres, and all conduit elbows and risers within concrete encasement, shall have a gray or black factory- applied PVC coating, or field applied heat shrink jacket, of not less than 20 mils thickness. Damaged PVC coatings shall be repaired with an approved compound. Conduit supports, channels, and mounting apparatus shall be 316 stainless steel. |
| B. Flexible Conduit: All flexible conduit shall be Type UA liquid-tight flexible metal conduit made with aluminum flexible conduit covered with an extruded PVC jacket, unless noted otherwise. Fittings shall be the type specifically designed for flexible conduit use and shall form watertight connections. Flexible conduit fittings shall be aluminum construction. |
| 1. Flexible conduit shall only be used for connections from conduits, junction boxes, or motor controllers to mechanical equipment or where the location of the connection is such that it is impractical to make a rigid conduit connection, where vibration isolation is required, or where specifically called for on the drawings. Flexible conduit shall be used for connection to all motors. |
| 2. Flexible conduit for use in hazardous areas shall be Crouse-Hinds EC Series, Appleton EX Series, or equal. |
| C. Non-Metallic Conduit: Non-metallic conduit, couplings, and fittings shall be Schedule 40 PVC or Schedule 80 PVC unless noted otherwise. All PVC conduit joints shall be solvent welded in accordance with the manufacturer's recommendations. |
| 1. Underground conduits and conduits embedded within slabs on grade shall be non-metallic; however, conversion shall be made to rigid metallic conduit before conduit runs exit encasement. Conversion elbows, fittings and risers within the concrete encasement shall be PVC coated rigid metallic conduit. |
| 2. Underground conduits shall be installed not less than 24 inches below grade. |
| 3. Underground pull boxes shall be provided for all miscellaneous underground conduit runs over 200 feet long or as required to limit the number of 90 degree bends to three or less. |
| 4. A minimum 3-inch-wide polyethylene warning tape, yellow for electrical and orange for telephone, with imprinted legend, shall be installed in the backfill above all underground conduits. Warning Tape shall be Allen Terra Tape, or equal and shall be guaranteed not to discolor. Unless indicated otherwise, the tape shall be 12 inches below the finished ground grade. |
| 2.04 WIRES AND CABLE |
| A. Low Voltage Cable: Low voltage wire and cable shall be 600 volt, single-conductor copper, rated 90 degrees C dry and 75 degrees C wet. Unless indicated otherwise, low voltage building wire shall have XHHW-2 insulation. |
| B. Instrumentation Cable: Instrumentation cable shall be single or double twisted pair, 600 volt, stranded, tinned copper conductors with cross-linked polyethylene primary insulation, overall foil shield with tinned copper braid, and chlorinated polyethylene jacket; Belden 3072F or equivalent. |
| 2.05 TERMINAL BLOCKS AND WIRE MARKING |
| A. Terminal blocks for power conductors shall be 600 volt, three pole unit construction type with high pressure solderless connectors, headless socket screws, and ampere rating equal to or greater than the ampacity of the maximum conductor size to be terminated; Square D Type LBC, or equal. |
| B. Terminal blocks for control and instrumentation conductors shall be 600-volt, sectional rail mounted terminal blocks with plastic pre-printed terminal numbering markers on both the inside and outside tracks, and provisions for center terminal bridge jumper cross connections with no loss of space on terminal or rail; Siemens 8WA1 011-1DF11, or equal. Terminal blocks for general control connections shall be feed-through terminal blocks; terminal blocks for instrumentation signal circuits shall be knife type test/disconnect terminal blocks; and terminal blocks for cable shield termination and grounding shall be ground blocks. |
| C. Cable and conductor markers shall be heat shrinkable sleeve markers with permanent legible machine printed markings. |
| 2.06 BOXES |
| A. General: Boxes shall be installed at all locations necessary to facilitate proper installation and equipment connection, including each conduit/cable transition. |
| 1. The minimum dimensions of boxes shall not be less than NEC requirements and shall be increased if necessary for practical reasons or where required to suit job conditions. |
| 2. Boxes shall have only the holes necessary to accommodate the conduits at the point of installation. All boxes shall have lugs or ears to secure covers. |
| 3. All boxes shall be rigidly secured in position. All boxes, except on unfinished ceilings and walls, and where conduit is run exposed, shall be so set that the front edge of box shall be flush with or recessed not more than 1/4-inch behind the finished wall or ceiling line. |
| B. Pull Boxes: Pull boxes, including junction boxes and terminal boxes, shall be installed at all necessary points, whether indicated or not, to prevent injury to the insulation or other damage that might result from pulling resistance or other reasons during installation. |
| 1. Unless indicated otherwise, pull boxes shall be NEMA 12 construction with gasketed screw covers and gray baked enamel over a rust-inhibiting primer finish. Pull boxes installed outdoors on in corrosive atmospheres shall be NEMA 4X type 316 stainless. |
| 2. Pull boxes in hazardous areas shall be explosion proof, cast aluminum construction with hinged, threaded, screw-on covers. Explosion proof pull boxes shall be equipped with threaded conduit openings as required for the initial installation, all identified future connections, and a minimum of one spare conduit opening sized to match the largest otherwise required conduit opening. |
| C. Underground Pull Boxes: Underground pull boxes shall be minimum 24-inch x 14-inch x 18-inch deep composolite service boxes constructed of reinforced polymer concrete suitable for light traffic loading, with locking cover and molded logo; Quazite Composolite, or equal. |
| 1. Unless otherwise indicated underground pull boxes shall have solid bottoms. Where open bottom pull boxes are indicated or approved for installation, a bed of gravel, minimum 12" thick and exceeding the pull box footprint by 6 inches on all sides, shall be placed beneath each open bottom pull box. |
| 2.07 SUPPORT SYSTEMS |
| A. Groups of two or more conduits, and all boxes and equipment, shall be mounted on a system of minimum 1-5/8-inch x 1-5/8-inch heavy wall aluminum or 316 stainless steel channel with a minimum of 25% unused capacity. |
| B. Overhead conduits shall be supported on trapeze hangers from approved concrete inserts and shall be grouped with pipes wherever possible. |
| C. Support system hardware, including hanger rods, shall be aluminum or stainless steel. |
| 2.08 CIRCUIT BREAKERS |
| A. Circuit breakers shall be 600 volt thermal magnetic, quick-make, quick-break molded case air circuit breakers, with trip-free operation, incorporating an internal trip bar and a single external handle. Breaker ratings shall be coordinated with the installed service and loads supplied. Unless indicated otherwise, breakers shall be rated not less than 25,000 amperes RMS symmetrical. |
| 1. Unless indicated otherwise, circuit breakers shall have NEMA 12 enclosures with gray baked enamel over a rust-inhibiting primer finish. Breakers located outdoors or in corrosive atmospheres shall have enclosures rated NEMA 3R, NEMA 4X type 316 stainless steel, or as indicated in the Contract drawings. |
| 2. Circuit breakers used as a service disconnecting device shall be 100% rated and UL service entrance rated; shall be equipped with long time, short-time, instantaneous and ground fault adjustments for system selectivity; and shall be fully rated for the maximum fault current, without the use of current limiters. |
| 2.09 SURGE PROTECTION |
| A. The CONTRACTOR shall furnish and install UL 1449 (latest edition) listed surge protection devices (SPD) for the protection of all AC electrical circuits from the effects of lightning-induced currents, substation switching transients, and internally generated transients from inductive and/or capacitive load switching. |
| B. Each SPD unit shall be marked with a short circuit current rating and shall not be installed at a point on the system where the available fault current is in excess of that rating. |
| C. Complete UL 1449 performance ratings, including the fault current rating and VPR rating, shall be posted on the UL label of each SPD. |
| D. Submit copies of the UL Standard 1449 Listing documentation for each proposed SPD. |
| E. AC power surge protection devices (SPD), formally transient voltage surge suppressors (TVSS), shall utilize heavy duty ‘large block’ MOVs, each exceeding 30mm diameter, with redundant modules per phase. SPD equipment shall provide suppression elements between all phases and each phase conductor and the system neutral. AC power surge protection equipment shall be APT, or equal. |
| F. SPD shall be UL labeled as Type 1, intended for use without need for external or supplemental overcurrent controls. Every suppression component of every mode, including N-G, shall be protected by internal overcurrent and thermal overtemperature controls. SPDs relying upon external or supplementary installed safety disconnectors do not meet the intent of this specification. |
| G. SPD shall be UL labeled with 200kA Short Circuit Current Rating (SCCR). Fuse ratings shall not be considered in lieu of demonstrated withstand testing of SPD, per NEC 285.6. |
| H. SPD shall be UL labeled with 20kA Inominal (I-n) for compliance to UL 96A Lightning Protection Master Label and NFPA 780. |
| I. Minimum surge current capability (single pulse rated) per phase shall be: |
| 1. Service Entrance Equipment: 300kA |
| 2. Power Distribution Equipment: 200kA |
| 3. Panelboards & Control Panels: 100kA |
| J. SPD shall provide surge current paths for all modes of protection: L-N, L-G, and N-G for Wye systems; L-L, L-G in Delta and impedance grounded Wye systems. |
| K. UL 1449 Listed Voltage Protection Ratings (VPRs) shall not exceed the following: |
| System Voltage L-N L-G L-L N-G |
| 208Y/120 700V 700V 1200V 700V |
| 480Y/277 1200V 1200V 1800V 1200V |
| L. Numerically lower is allowed/preferred; old-style Suppressed Voltage Ratings (SVRs) shall not be submitted, nor evaluated due to outdated less-strenuous testing) |
| M. UL 1449 Listed Maximum Continuous Operating Voltage (MCOV): |
| System Voltage Allowable Voltage Fluctuation (%) MCOV |
| N. SPD shall have UL 1283 EMI/RFI filtering with minimum attenuation of -50dB at 100kHz. |
| O. SPD shall include visual LED diagnostics including a minimum of one green LED indicator per phase, and one red service LED. SPD shall include an audible alarm with on/off silence function and diagnostic test function (excluding branch). |
| P. SPD shall have a minimum of one Form C relay / dry contact for remote monitoring to the OWNER’s SCADA / RTU system abnormal conditions with the SPD. |
| Q. Warranty – Each SPD shall have a warranty period of not less than 10 years, incorporating unlimited replacements of suppressor parts if they are destroyed by transients during the warranty period. |
| 2 |
| 3.01 CODES, PERMITS, AND INSPECTIONS |
| A. The installations shall be in accordance with the regulations of the latest editions of the National Electrical Code, National Electrical Safety Code, applicable city, state, and local codes and regulations and other applicable codes, including utility company codes. |
| B. All permits required by state or local ordinances shall be obtained and after completion of the work, a certificate of final inspection and approval from the electrical inspector shall be furnished to the OWNER. All permits for installation, inspections, connections, etc., shall be taken out and paid for as part of the work under this section. |
| 3.02 CONDUIT INSTALLATION |
| A. Conduit Installation: All conduits shall be run in such a manner as to cause the least interference with other trades. Conduits shall be joined by means of couplings or 3-piece coupling type conduit unions. Joints shall be set up tight. Runs shall be straight and true; elbows, offsets, and bends shall be uniform and symmetrical. Installation workmanship shall be of the best quality and skill. |
| B. Conduits shall be of sizes required to accommodate the number of conductors in accordance with the tables given in the current edition of National Electrical Code or as noted on the drawings. The minimum size of conduit shall be 3/4-inch. |
| C. Conduit runs shall terminate below the section of the motor control center or equipment to which their respective circuits run. Concealed conduits shall be run in as direct a line as possible. Exposed conduits shall be run parallel to or at right angles with the lines of the building. All bends shall be made with standard conduit ells, conduit bent to not less than the same radius, or aluminum conduit outlet bodies with gasketed cast iron covers. Adjacent conduit runs shall be installed with concentric bends. All bends shall be free from dents or defects. Not more than the equivalent of four quarter bends shall be used in any one run between terminals at cabinets, outlets, and junction or pull boxes. Boxes shall be in accessible locations. |
| D. Conduit shall be continuous from outlet to outlet and from outlets to cabinets, junctions, or pull boxes and shall enter and be secured to all boxes in such a manner that each system shall be electrically continuous from point of service to all outlets. Insulated grounding bushings shall be used on all metallic conduits. Terminals of all conduits shall be plugged with an approved cap to prevent the entrance of foreign materials when exposed during construction. |
| E. As far as practicable, all exposed conduits shall be run without traps. Where dips are unavoidable, a pull box or approved conduit outlet body shall be placed at each low point. Conduit systems shall be completed before conductors are drawn in. Where conduits must be run exposed, except as indicated in the drawings, locations of the runs shall be subject to approval. |
| F. Where exposed conduit needs clamping to the structures, clamps shall consist of aluminum 1-hole pipe straps and pipe spacers, galvanized steel bolts of appropriate size to fill the holes in the straps and spacers, and approved expansion shields. Clamps used with aluminum conduit, and clamps located outdoors or in “corrosive atmospheres”, shall be PVC coated, aluminum or 316 stainless steel. Clamps shall be bolted to the structure or where necessary to intermediate galvanized steel brackets. Spacing between conduit supports shall not exceed the recommendations published by the National Electrical Code. No deformed, split, or otherwise defective conduit or fitting shall be installed. Conduit shall be installed with a minimum number of joints. |
| G. Aluminum Myers hubs shall be used for all threaded conduit connections to enclosures that do not contain integral threaded conduit hubs. Conduit connections to enclosures located outdoors shall only enter the bottom of the enclosure. Side penetration is acceptable with Myers hubs with ENGINEER approval. |
| H. Where conduit has been cut in the field, it shall be cut square using a hand or power hacksaw or approved pipe cutter using cutting knives. The use of pipe cutters with cutterwheels will not be permitted. The cut ends of the field-cut conduit shall be reamed to remove burrs and sharp edges. Where threads must be cut on conduit, the threads shall have the same effective length and shall have the same thread dimensions and taper as specified for factory-cut threads on conduit. Conduits installed in the work with threads not complying with these requirements shall be removed and replaced. |
| I. Where conduit installed in concrete or masonry extends across building joints, expansion joints with approved type grounding straps and clamps shall be installed. Expansion joints shall be Type XJ as manufactured by Crouse-Hinds, Appleton, or equal. Where conduit enters a building through the concrete foundation, below final grade, approved type FSK entrance seals shall be used. |
| J. All conduits shall be cleaned, prior to pulling in wire and cable, by pulling a stiff wire brush of the size of the conduit through it. This cleaning shall remove all foreign matter, including water, from the conduit. All boxes in which the conduit terminates shall be cleaned of all concrete, mortar, or other foreign matter and all threads in boxes shall be left clean and true upon completion of the work. |
| K. All spare, future, or conduits for utility or manufacturer conductors shall be equipped with a pull wire prior to capping. |
| L. All conduits, fittings, and electrical equipment used within hazardous areas shall comply with requirements of the National Electrical Code for the type of hazardous location encountered and shall be furnished as specified for "corrosive atmospheres". |
| M. In such hazardous locations, conduits terminating at boxes enclosing electric switching, or circuit opening equipment, shall be sealed at the entrance to the enclosure with approved, compound-filled, sealing fittings to prevent passage of explosive or combustible gases through the conduits. |
| N. All conduits exiting from such hazardous locations or entering said locations shall be similarly sealed at point of exit or entrance. |
| O. Non-metallic conduit runs shall be provided with grounding bushings and a separate green insulated equipment grounding conductor sized in accordance with NEC 250.122. |
| 3.03 WIRE AND CABLE INSTALLATION |
| A. The installation of wires and cables includes all splicing of these wires and cables to each other and connecting them to receptacles, switches, control boxes, lighting fixtures, motors, and all other electrical apparatus installed under this Contract. All cable installation methods shall correspond to the manufacturer’s recommendations. |
| B. Wire and cable shall be suitably protected from weather or damage during storage and handling, and it shall be first-class condition when installed. |
| C. VFD rated cable shall be installed between all inverter duty rated motors and variable frequency drives, no exceptions. |
| D. The minimum size of wire or cable conductor shall be No. 12, unless indicated otherwise on the drawings. Wire sizes No. 8 and larger, and all wire sizes utilized for control or instrumentation, shall be stranded. All sizes called for in the specifications or shown on the drawings are American Wire Gauge sizes. |
| 1. No wire smaller than No. 12 shall be used for any branch circuit unless noted otherwise on the drawings. Larger sizes shall be used where required or indicated on the drawings. If the single distance from the panelboard to the first device exceeds 50 feet, the minimum size for this run shall be No. 10 AWG with the minimum between devices as No. 12 AWG. |
| E. All sizes of wire and cable furnished and installed under these specifications shall be color-coded with a separate color for each phase and neutral used consistently throughout. Each conductor shall have factory color-coded insulation. As an alternative, wire sizes No.8 and larger shall have black insulation and shall be color-coded with waterproof phasing tape at each termination, junction box, pull box, etc. All 480Y/277-volt wiring shall be color-coded yellow, brown, and orange for hot legs (Phase A, B, and C, respectively). All 208Y/120-240-volt wiring shall be color- coded black, blue, and red for hot legs (Phase A, B, and C, respectively). The grounded neutral conductor of each circuit shall be color-coded white. Grounding conductors shall be color-coded green. |
| F. All wires and cables shall, as far as practicable in the judgment of the ENGINEER, be continuous from origin to destination without running splices in intermediate pull boxes, junction boxes, or wireways. At the ends of these wires and cables, only sufficient slack shall be left as may be required for making proper connections. There shall be no unnecessary slack. |
| G. In connecting wires and cables to apparatus, various methods shall be used depending upon the local conditions as detailed on the drawings. In general, solderless pressure connectors shall be used for terminals, taps, and splices for all wires and cables. Solderless pressure connectors or vinyl-covered steel spring-type connectors shall be securely fastened and shall not loosen under vibration or normal strain. All connections shall be in accordance with the manufacturer’s recommendations and shall be with connectors approved for the connection conditions. |
| H. Where wires and cables are connected to metallic surfaces, the coated surfaces of the metal shall be polished before installing the mechanical connector. The lacquer coating of the conduits shall be removed where a ground clamp is to be installed. |
| I. All soldered joints shall be made mechanically strong before soldering and shall be carefully soldered without the use of acid and shall be taped with insulating tape to a thickness equal to that of the insulation. |
| J. The installation of wires and cables shall include the furnishing and installing of all hangers, racks, cable cleats, and supports that may be necessary to make a neat and substantial wiring installation in all pull boxes, wireways, cable channels, and in such other locations as may be required. Plastic ties shall be used to hold the wires and cables together and to the racks or supports. |
| K. Each junction box, terminal box, control cabinet, or other terminal location containing a total of four or more conductor terminations or splices, shall be equipped with 1 or more terminal boards, as required, for connecting each wire including the spare wires. Each wire terminal shall be permanently marked throughout the entire system using, wherever possible, the notation of the wires given on the manufacturer's wiring diagrams. Sufficient terminal blocks shall be provided to terminate all wires routed to the enclosure including all spare conductors. In addition, the greater of 20 percent or four unused spare terminals shall be provided. All connections for future functions shall be wired to numbered terminal blocks, grouped separate from the terminal blocks in use. Terminal blocks shall be grouped to isolate power conductors from control conductors and to separate AC circuits from DC circuits. |
| L. Each control, instrumentation, and power cable and conductor shall be marked with the proper feeder symbol or termination number in each manhole, handhole, pull box, wireway, terminal cabinet, panelboard, switchboard and all additional locations required to provide positive identification. Each conductor shall be marked at each point of termination following final installation. |
| M. The electrical installation shall maintain suitable isolation between power, control and instrumentation conductors. Approved isolation barriers shall be provided within each pull box, terminal box, wireway, cable tray, handhole, manhole, etc. |
| 3.04 SURGE PROTECTION |
| A. Service Entrance - Each SPD installed on service entrance equipment shall be replaceable modular construction. A UL approved disconnect switch shall be provided as a means of servicing disconnect if a 60A breaker is not available. |
| B. Power Distribution - Each SPD installed on switchboards or motor control centers shall be replaceable modular construction. Each SPD shall have an independent means of servicing disconnect such that the protected power distribution equipment remains energized. A 30A breaker (or larger) may serve this function. |
| C. Sub Panels - Each SPD installed on power distribution panelboards, lighting panelboards, control panels, unit equipment, etc. shall be encapsulated construction. |
| D. SPD equipment shall be installed per manufacturer’s installation instructions with lead lengths as short (less than 24”) and straight as possible. Gently twist conductors together. |
| E. Installer may reasonably rearrange breaker locations to ensure short & straightest possible leads to SPDs. |
| F. SPD shall be installed on the load side of the main service disconnect. |
| G. Before energizing, installer shall verify service and separately derived system Neutral to Ground bonding jumpers per NEC. |
| H. Status indication pilot lights for each SPD shall be remote mounted and shall be visible from the front of the protected equipment enclosure. |
| 3.05 TESTING |
| A. Upon completion, the CONTRACTOR shall provide all necessary instruments and special apparatus to thoroughly test the complete installation and shall conduct all tests that may be required to ensure system is free of all improper grounds and short circuits, and that all the feeders are properly balanced. All electrical equipment shall be tested to determine proper polarity, phasing, relay settings, and operation. System shall be checked for quality and completeness in accordance with the provisions of the General Conditions. Any objectionable noise, heating, voltage drop, or excessive current draw, after in operation, shall be identified and corrected. |
| B. Prior to energization, the electrical system ground resistance shall be tested. Additionally, the insulation resistance of all electrical gear, power feeders, and electric motors shall be measured. Upon completion of all corrective measures required, certified acceptance reports, including tabulations of all initial and final resistance measurements, shall be submitted for approval in accordance with the provisions of the General Conditions. |
| C. System testing shall include complete circuit breaker tests for each power circuit breaker and complete thermal surveys of all new and existing electrical apparatus. Upon completion of all corrective measures required, certified acceptance reports, including satisfactory infrared photographs, shall be submitted for approval. |
| 3.06 SPARE PARTS |
| A. The CONTRACTOR shall furnish, upon completion of the project, one year's supply of all consumable parts utilized within the electrical system, including pilot lights (minimum 12 of each type), fuses (minimum 12 of each type below 100 amps and 6 of each type 100 amps and above), etc. |
| 3.07 GUARANTEES |
| A. All materials and workmanship shall be guaranteed to be free from defects. Any part of the system considered defective by the ENGINEER within the guarantee period shall be immediately replaced or corrected to the ENGINEER's satisfaction without further expense to the OWNER. |
| B. Upon final completion, the CONTRACTOR shall furnish certification from each equipment manufacturer that all equipment has been installed in accordance with the requirements of these specifications, is ready for permanent operation, and that nothing in the installation shall render the warranty null and void. |
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