2015_TAFB_Electrical_Standard.pdf

Page 1 of 23 Revised: 01-JAN-2015

BASE STANDARDS FOR BUILDING/UTILITY ELECTRICAL DISTRIBUTION

SYSTEMS/TELE-DATA COMMUNICATIONS

Tinker Air Force Base, Oklahoma

01-JAN 2015

1. General:

1.1 References

(a) As a minimum, all electrical work performed on Tinker AFB shall conform to the latest edition of the following codes/standards:

(1) NFPA 70, National Electrical Code (NEC)

(2) NPFA 70E Standard for Electrical Safety in the Workplace

(3) NFPA 72, National Fire Alarm and Signaling Code

(4) NFPA 101, Life Safety Code

(5) IEEE C2, National Electric Safety Code (NESC)

(6) UFC 3-501-01, Electrical Engineering

(7) UFC 3-520-01, Interior Electrical Systems

(8) UFC 3-530-01, Interior and Exterior Lighting and Controls

(9) UFC 3-535-01 Visual Air Navigation Facilities

(10) UFC 3-540-01, Engine-Driven Generator Systems for Backup Power Applications

(11) UFC 3-550-01, Exterior Electrical Power Distribution

(12) UFC 3-560-01, Electrical Safety

(13) UFC 3-575-01, Lightning and Static Electricity Protection Systems

(14) UFC 3-580-01, Telecommunications Building Cabling Systems Planning and Design

(15) UFC 3-600-01, Fire Protection Engineering for Facilities

(16) UFC 3-601-02, Operation and Maintenance: Inspection, Testing and Maintenance of

Fire Protection Systems

(17) UFC 4-010-01, DOD Antiterrorism Standards for Buildings

(18) UFC 4-021-01, Design and O&M: Mass Notification Systems with Change 1

(19) ANSIA/TIA/EIA-568-C

(20) ANSIA/TIA/EIA-569-B

(21) NEIS, National Electrical Installation Standards

NECA 1, Good Workmanship in Electrical Contracting

NECA 90, Commissioning Building Electrical Systems

NECA 100, Symbols for Electrical Construction Drawings (ANSI)

NECA 101, Installing Steel Conduits (Rigid, IMC, EMT)

NECA/NEMA 105, Standard for Installing Metal Cable Tray Systems (ANSI)

NECA 111, Installing Nonmetallic Raceways (RNC, ENT, LFNC)

NECA/NACMA 120, Installing Armored Cable (AC) and Metal-Clad Cable

(MC)

NECA 169, Standard for Installing and Maintaining Arc-Fault Circuit

Interrupters

NECA 200, Temporary Electric Power

NECA 202, Installing Industrial Heat Tracing Systems

NECA 230, Electric Motors and Motor Controllers

NECA/FOA 301, Installing and Testing Fiber Optic Cables

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NECA 305, Standard for Fire Alarm System Job Practices

NECA 331, Standard for Building and Service Entrance Grounding and Bonding

NECA 400, Installing and Maintaining Switchboards

NECA 402, Installing and Maintaining Motor Control Centers

NECA/EGSA 404, Installing Generator Sets

NECA 407, Installing Panelboards

NECA 408, Installing and Maintaining Busways

NECA 409, Installing and Maintaining Dry-Type Transformers

NECA 410, Installing and Maintaining Liquid-Filled Transformers

NECA 411, Standard for Installing and Maintaining Uninterruptible Power

Supplies (UPS) (ANSI)

NECA 420, Standard for Fuse Applications (ANSI)

NECA 430, Standard for Installing Medium-Voltage Metal-Clad Switchgear

NECA/IESNA 500, Installing Indoor Commercial Lighting Systems

NECA/IESNA 501, Installing Exterior Lighting Systems

NECA/IESNA 502, Installing Industrial Lighting Systems

NECA 505, Standard for Installing and Maintaining High Mast, Roadway and

Area Lighting

NECA/BICSI 568, Installing Commercial Building Telecommunications Cabling

NECA/MACSCB 600, Installing and Maintaining Medium-Voltage Cable

NECA/NEMA 605, Installing Underground Nonmetallic Utility Duct

NECA 607, Standard for Telecommunications Bonding and Grounding Planning and Installation Methods for Commercial Buildings

NECA 700, Standard for Installing Overcurrent Protection to Achieve Selective

Coordination

1.2 Design

(a) As a minimum, all electrical design shall conform to the latest edition of the above codes/standards.

(b) To the extent possible, Unified Facility Guide Specifications (UFGS) and standard detail shall be utilized in the design. All specifications and general notes shall have the non-applicable parts edited.

(c) Existing as-built drawings (if available) may be used as guidelines, but “information must be verified by field investigation”. The Designer shall be responsible for the verification of all dimensions, measurements, and location of existing facilities, utilities, equipment and other existing conditions that may affect the design.

(d) The following items shall be taken into consideration and included as part of the design analysis:

(1) Exterior – Primary circuit availability and location.

(2) Exterior - Primary circuit loading (generally, existing primary loops at TAFB are designed for loads of 400A or less. Future loops may be designed for higher capacities as long as analysis shows that existing switchgear/substations can support the higher requirement).

(3) Existing equipment age and condition

(4) Transformer/panelboard/switchgear loading (existing and future).

(5) Non-linear loads (Fluorescent lighting, computers, variable frequency drives, etc)

(6) Energy Analysis

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(e) All new building wiring systems shall consider using 480/277V unless uneconomical to accomplish. Designer shall make recommendations of building voltages at the design analysis phase of each project.

(f) All new electrical transformers and distribution equipment shall have a Fault Current

Calculations and Arc Flash analysis performed. Calculations shall be performed using

“Easy Power” software and submitted to 72ABW/CE for review and approval prior to equipment installation.

(1) Fault Current Calculations and Arc Flash Analysis shall be included as part of the 95% design submission to the Gov’t for review and approval.

(g) Arc Flash labeling shall be installed on all new installed electrical transformers, disconnects and distribution equipment.

(1) All Arc Flash Labeling shall be “Easy Power” containing the following information.

Company Name

Date of Arc Flash Analysis

Equipment Identification

Required PPE

Flash Protection Information

i. Arc Flash Hazard Risk Category

ii. Incident Energy (Cal/cm2)

iii. Distance of Flash Hazard

iv. Flash Protection Boundary

Shock Protection

v. Voltage Shock Hazard

vi. Limited Approach Boundary

vii. Restricted Approach Boundary

viii. Prohibited Approach Boundary

1.3 Installation

(a) As a minimum, all electrical installations shall conform to the latest edition of the above codes/standards.

(b) NEIS shall be used for quality and reliability standards for construction. These criteria will be used to define acceptable industry practices for installations.

(c) Only journeymen electricians (state licensed or minimum 12,000 hours verifiable experience) or registered apprentices under the direct supervision of journeymen will be permitted to install, alter, or repair electrical systems.

(d) Material and equipment shall be a standard product of a manufacturer regularly engaged in the manufacture of the product and shall essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening. All materials in the same category shall be by a single manufacturer. Equipment from discontinued product lines shall not be accepted in new installation.

(e) All conductors shall be color-coded at panelboards, switchboard, terminations, junction boxes, manholes, hand holes, etc. Factory-applied color-impregrated insulation is required for all sizes. Equipment grounding conductors (EGC) shall have factory-applied color-impregrated insulation for all sizes. A green equipment-grounding conductor shall be installed with all branch circuits. Circuit conductors shall be color coded as follows:

(1) All Configurations: Equipment Grounding Conductor, Green. (Exception: Where an isolated ground is required the isolated ground shall be identified as green with a yellow stripe.)

(2) 120V, 2-wire circuit: Grounded conductor (neutral), White; Ungrounded leg, Black.

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(3) 240/120V, 1-phase, 3-wire circuit: Grounded conductor (neutral), White; Phase A, Black; Phase B, Red.

(4) 208Y/120V, 3-phase, 4-wire circuit: Grounded conductor (neutral), White; Phase A, Black; Phase B, Red; Phase C, Blue.

(5) 208V, 3-Phase, 3-wire circuit: Phase A, Black; Phase B, Red; Phase C, Blue.

(6) 480Y/277V, 3-phase, 4-wire circuit: Grounded conductor (neutral), Gray; Phase A, Brown; Phase B, Orange; Phase C, Yellow.

(7) 480V, 3-phase, 3-wire circuit: Phase A, Brown; Phase B, Orange; Phase C, Yellow.

(f) All new floor mounted electrical equipment shall be installed on a housekeeping pad a minimum of 3 1/2” A.F.F. Any exposed edges shall be ¾” chamfered.

1.4 Metering

1.4.1 Digital Metering

(a) Advanced Digital Metering (ADM) shall be installed in each switchboard or switchboard section (for double ended applications) for billing and energy monitoring & reduction purposes.

Advanced meters are electronic meters that have the capability to measure and record interval data and communicate that data to an Advanced Metering System (AMS).

(1) Monitors may also be remote mounted between 72” and 80”Above Finished Floor.

(b) ADM shall conform to Unified Facilities Guide Specification (UFGS) 26 27 13.10 30, except numbered terminal wiring sequence and case size may be the manufacturer’s standard.

(c) All setup parameters required by the electronic monitor shall be stored in non-volatile memory and retained in the event of a control power interruption. Any battery or other device used to provide non-volatile memory shall be user serviceable from the front of the monitor and servicing shall not require removing the monitor from the gear in which it is mounted.

(d) The ADM monitor shall maintain in non-volatile memory maximum and minimum values for each of the instantaneous values reported as well as the time and date that the minimum or maximum was set.

(e) The ADM monitor shall have the ability to communicate information to a remote data collection system.

(1) TAFB utilizes Itron MV-90xi as its (AMS) system though the CE industrial controls network. All ADM shall be compatible with MV-90xi.

(f) All new ADM shall be a Schneider ION 8600 series or next generation equivalent

(g) All necessary instrument transformers (CTs/PTs) shall be provided in the switchgear.

(h) The monitor shall be listed according to UL 508, and have an over-current withstand rating of 500 amps for 1 second.

(i) The monitor shall provide true RMS metered values accurate for distorted, non-sinusoidal wave-shapes beyond the 30 th harmonic (fundamental of 60 hertz).

(j) The monitor shall be accurate to 0.25% of reading 0.05% of full scale for voltage and current metering, and 1.0% for all power and energy functions. The accuracy shall be maintained for both light and full loads. No annual re-calibration by users shall be required to maintain these accuracy’s.

(k) Voltage and current for all phases shall be sampled simultaneously to assure high accuracy in conditions of low power factor or large waveform distortions (harmonics).

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(l) The monitor shall be equipped with an integral, continuous duty, long-life display to provide local access to the following metered quantities as well as the minimum and maximum value since last reset of each quantity:

(1) Current (RMS), per phase and neutral

(2) Voltage, phase-to-phase and phase-to-neutral

(3) Real power, per phase and 3-phase total

(4) Reactive power, per phase and 3-phase total

(5) Apparent power, per phase and 3-phase total

(6) Power factor, per phase and 3-phase total

(7) Frequency

(8) Demand current, per phase and three phase average

(9) Demand real power, three phase

(10) Demand apparent power, three phase

(11) Accumulated Energy, (MWH and MVARH)

(12) THD, current and voltage, per phase

(13) K-factor, current, per phase

(m) The following demand readings shall be reported by the monitor:

(1) Average demand current, per phase

(2) Peak demand current, per phase

(3) Average demand for real power, reactive power, and apparent power

(4) Predicted demand for real power, reactive power, and apparent power

(5) Peak demand for real power, reactive power, and apparent power

(6) The default demand calculations method shall be 15-minute sliding window.

(n) Where ADM is to be connected to the VLAN, contractor shall install conduit and CAT 6 cabling to the nearest Comm Rack as specified in the project SOW.

(1) Cable test result report shall be submitted to 72ABW SC with other closeout documents.

(o) ADM to be installed outdoors may use a wireless radio transceiver in lieu of a wired connection, if LAN connection is not available.

(1) The wireless radio transceiver shall be a Freewave FRG2-PE or next generation equivalent, with accompanying radio components, coaxial cable, antenna, power supply, etc.

(2) The radio components must be contained within a weather resistant enclosure,( i.e. in the switchgear or other properly classified enclosure).

(p) IP addresses, Ethernet gateways, and subnet masks will be provided to the installing contractor for the ADM and accompanying wireless radio transceiver, if required, by the 72ABW/CE

Energy Team.

(q) A standard local digital meter (Volt, Amp, Demand Volt, Demand Amp) shall be installed on circuit breakers 600 amp and larger to include all main service switchgear and secondary switchgear branch circuits.

(1) The digital meter shall maintain in non-volatile memory maximum and minimum values for each of the values as well as the time and date that the minimum or maximum was set.

(r) Commissioning

(1) Installation contractor shall be required to provide documentation verifying proper meter calibration and verifying proper operation/readings for all digital metering during commissioning of the equipment.

(2) Installation contractor shall be required to provide documentation verifying that the ADM can establish good communications remotely with the MV-90xi AMS system, either through a wired or wireless connection.

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2. Exterior Electrical

Note: Any project performed by OG&E or their sub-contractors shall install all MV systems and equipment IAW OG&E specifications.

All other installed MV systems installed on TAFB shall comply with the following requirements.

2.1 General

(a) All exterior pad mounted equipment shall be installed in accordance with (IAW) the Base

Facility Standard for Architectural Compatibility.

(b) Medium Voltage Transformer Pads shall be installed by the contractor per OG&E supplied specifications.

(1) Forms and Reinforcement shall be inspected and approved by OG&E prior to pouring concrete.

(c) All exterior pad mounted equipment shall have permanently affixed identification labels.

Labels shall be weather resistant, engraved, 2-plex acrylic. Labels shall indicate equipment identification, rating, and circuit designation. Information for new equipment identification and circuit designation will be provided by 72ABW/CE.

(d) All exterior underground cables shall have permanent identification tag installed at each manhole, hand hole, pull box, or termination. Labels shall be weather resistant, engraved, metal or 2-plex acrylic. Labels shall indicate at a minimum the circuit designation and

To/From information. Information for circuit designation shall be provided by72ABW/CE.

(e) Disconnects for mechanical and other equipment on the outside of buildings shall be served from the rear (through the wall feeder) or bottom (below grade feeder).

(f) All bussing in electrical equipment shall be copper.

(g) Utility Lines and Structures

(1) Place utilities underground and screen above-ground equipment to minimize their visual impact.

(2) Exposed conduits, cables, and wires are prohibited.

(3) Construct underground utility system components as elements of any new or renovated facilities. When this is unfeasible, locate screened equipment on the least visible side of the building.

2.2 Underground Electrical Distribution

2.2.1 Concrete Encased Duct Bank

(a) Concrete encased conduits shall have minimum spacing between conduits as specified by

NFPA 70 and UFC 3-550-01 with a minimum of 3 inches of concrete protecting them on top, bottom, and sides.

(b) The top of the concrete encasement shall be a minimum of 30” below finished grade.

(c) All concrete encased duct banks shall have a 1/0 bare copper counterpoise system installed immediately above the duct bank (6” or less) and continuous the length of the duct bank.

Counterpoise shall be connected to a ¾” x 10’ ground rod in each manhole and at each transformer and switching-station installation (including primary substations). Where duct bank terminates at a pole riser, counterpoise shall be connected to a ¾” x 10’ ground rod and bonded to the pole grounding system.

2.2.2 Direct Buried Conduit

(a) For 600V and below, where direct buried conduit is specified in the project documents, direct buried conduit shall be Schedule-80 PVC conduit a minimum of 30” below grade. Direct

Page 7 of 23 Revised: 01-JAN-2015 buried conduit supplying individual branch circuits such as exterior lighting or power receptacles may be Schedule 40 PVC conduit installed at a minimum depth of 24” below grade. All conduits shall be encased with sand and compacted prior to backfilling with other materials.

(b) All conduit that extends from excavations above finished grade, shall be PVC coated galvanized rigid conduit, starting from minimum depth as specified and include the 90 deg.

elbow.

(c) Where a raceway enters a building or structure from an underground distribution system, it shall be sealed in accordance with NFPA 70 300.5(G). Spare or unused raceways shall also be sealed. Sealants shall be identified for use with the cable insulation, conductor insulation, bare conductor, shield, or other components.

2.2.3 All utility road and driveway crossings shall be bored and sleeved with single schedule 80 PVC or ¼”-wall steel sleeve. Roadways and driveways shall not be crossed by open cut unless approved. Wherever boring is impractical, street crossings shall be limited to three (3) days maximum (including trenching, compaction, and replacement of existing pavements).

Contractor shall provide steel matting sufficient to carry the traffic load of the excavated area.

2.2.4 All underground electrical and communication installations (conduit, duct bank, etc.) shall be identified using marking tape. Tape shall have the following characteristics:

(a) 5-mil plastic

(b) Brightly colored (electric – red; communication – orange)

(c) Minimum of 3 inches in width

(d) Suitably inscribed at not more than 10 feet on centers

(e) Continuous metallic backing and a corrosion resistant 1-mil metallic foil core to permit easy location of duct line.

(f) Tape shall be placed 12-inches below finished grade.

2.3 Medium Voltage Distribution

2.3.1 General

(a) Install distribution conductors in underground ducts in lieu of direct burial and/or overhead.

(b) Air vacuum type switches are required in lieu of oil insulated. SF6 switches may be used in areas where equipment size is a concern with 72ABW/CE approval.

(c) All primary loop switches shall be equipped with Directional Fault Indication.

2.3.2 Primary Loop Feeders

(a) Medium voltage cable shall be (minimum) 15kV-500 kcmil copper, XLP/XLPE or EPR, with

100/133% insulation, wire shield or separator tape, and an ozone/sunlight resistant PVC jacket. Concentric neutral cable shall not be used.

(b) Grounded conductor (neutral) shall be (minimum) 600V- #4/0 AWG copper.

(c) Conductors shall be protected by a (minimum) 5-inch diameter concrete-encased

Schedule-40.

(d) Cables shall be routed and racked inside manhole to allow the longest possible length of spare cable in each manhole possible (minimum of 1 full loop around the interior of the manhole).

2.3.3 Primary Radial Feeders

http://codesonline.nfpa.org/a/c.ref/2014_ID000070043130/sec

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(a) Medium voltage cable shall be (minimum) 15kV- #2 AWG copper, XLP/XLPE or EPR, with

100/133% insulation, wire shield, separator tape, and an ozone/sunlight resistant PVC jacket.

Concentric neutral cable shall not be used.

(b) Grounded conductor (neutral) shall be (minimum) 600V- #2 AWG.

(c) Conductors shall be protected by a minimum 5” diameter concrete-encased Schedule-40.

(d) Cables shall be routed and racked inside manhole to allow the longest possible length of spare cable in each manhole possible.

2.3.4 Medium Voltage Branch Circuits Installed Inside Buildings shall meet the following requirements.

(a) All Conductors shall be Class B compressed strand copper.

(b) Conductor shield shall be 16 mils minimum extruded semi-conducting, thermosetting compound.

(c) Insulation shall be 220 mils average Extruded Ethylene Propylene Rubber

(d) Insulation shield shall be 32 mil minimum and 60 mils maximum extruded semi-conducting, thermosetting compound.

(e) Metallic Shield shall be 5 mil bare copper tape, helically applied with minimum 25% overlap.

(f) Galvanized Steel Interlocked Armor with overall 85 mil minimum average thick PVC Jacket.

2.3.5 Medium Voltage Cable Terminations and Splices

(a) Terminations and splices shall be of the preformed type only, tape type are not acceptable.

(b) All cable splices and terminations shall be installed in accordance with the manufacturer’s specifications.

2.3.6 Medium Voltage Cable Testing

(a) Testing requirements shall be coordinated during design of each project.

(b) Approved testing methods are Hi-Pot and Very Low Frequency (VLF) High-Voltage testing.

(c) All new cable being hi-pot tested shall be in accordance with manufacturer’s recommendations, but not to exceed 3-times the cable voltage rating. Testing shall be performed in accordance with the methodology described in the applicable IEEE, ICEA, or

AEIC standards.

(d) Existing cable being reused, or spliced into, shall be hi-pot tested at its rated insulation voltage. Testing shall be performed in accordance with the methodology described in the applicable IEEE, ICEA, or AEIC standards.

(e) Cable testing performed using VLF procedures shall be in accordance with IEEE Std. 400.2.

(f) All cable testing must be coordinated with the72ABW/CE electric shop in advance.

(g) Cable test data and results shall be documented and signed by the testing technician and the job supervisor. Copies of the test data/certification/results shall be provided to the

72ABW/CE for review.

(h) For new construction, the recorded test data must be submitted to and approved by the

Contracting Officer.

2.4 Low Voltage Distribution

(a) Conductors shall be 600V-rated copper, with thermoplastic insulation (unless specified otherwise on the design plans).

(b) Conductors to be installed in wet locations must be UL listed for the application.

(c) Conductors shall be sized as appropriate for the application.

(d) Feeders shall be installed without splices.

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(e) No splicing into existing circuits without 72ABW/CE approval for real property electrical systems or 776 MXSS approval for non-real property electrical systems.

2.5 Transformers

(a) New building transformers shall be either unit substation or fully enclosed pad mounted (in lieu of pole mounted).

(b) Unit Substation: Based on existing site conditions and availability of medium-voltage feeders, transformers shall be either:

(1) Radial type fed with integral single, metal-enclosed, fused, load-interrupter switch.

(2) Loop-fed type with integral dual, metal-enclosed, fused, load-interrupter switches.

(3) Incoming section shall include surge arrestors.

(4) Outgoing sections shall be as specified in the project definition.

(5) Gear shall have copper bussing and windings.

(6) All Unit Substations shall be equipped with forced fan cooling, temperature monitoring with local alarm, and remote alarm capability. Power for cooling fans shall be integrally derived from the Unit Substation secondary power.

(c) Pad-Mounted: Pad mounted transformers shall meet the following criteria.

(1) Transformers shall be loop-feed type.

(2) Transformers shall be dead front type with separable load break connectors, surge arrestors, and parking bushings.

(3) Transformers shall have load break switches and primary fuses mounted inside the enclosure. Transformer fusing shall be oil-immersed, bayonet type, overload fuses in series with partial range current-limiting fuses. Fuses shall be interlocked with primary load break switches.

(4) Transformers shall have copper windings.

(5) Transformers shall have, as a minimum, four (4) 2.5% taps (2+, 2- nominal voltage).

(d) Each transformer shall be fed from a dedicated fused switch. The switch shall be located in the same general area as the equipment being served.

(e) Transformer primary feeders shall not be t-spliced into existing feeders in manholes or hand holes.

(f) The main primary feeder (12.47KV and larger) shall be concrete encased in underground duct bank.

(g) Transformer output voltage shall be verified at commissioning of system and load taps adjusted to provide voltage +/- 2.5% of nominal.

(h) Oil filled transformers shall utilize Mineral Insulating Oil per ASTM D3487-00 and shall be equipped with relief valves, and if pad mounted, a means of sampling the oil.

(i) Oil filled transformer installations shall comply with IEEE 979 regarding fire protection. Oil filled transformers may be physically separated from building surfaces or other oil filled transformers or may be separated by appropriate fire rated barriers. Space limitations may dictate the method of fire protection employed.

(j) Field-testing, pre-energization, or manufacturer’s field service report shall be required unless specifically stated in project definition.

2.6 Auxiliary Power/Generators

(a) Emergency generators shall only be installed for facilities authorized for emergency power by AFCEC as required by UFC 3-540-01, ETL 13-4 and AFI 32-1063 paragraph 5, Electric

Power Systems. No Emergency generator shall be installed on TAFB without prior written approval from AFCEC.

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(b) The following information shall be submitted to 72ABW/CE for approval of the following criteria prior to ordering or installing any generator on TAFB.

(1) A justification letter, signed by the Commanding Officer of the submitting group, stating the applicable criteria which qualify the system to be supported by auxiliary power as listed in AFI 32-1063 paragraph 5. This justification letter will be needed to facilitate the required formal request for approval to AFCEC.

(2) All generators shall comply with the requirements contained in AFI 32-1063.

(3) A design analysis shall be performed prior to the installation of any generator demonstrating sizing compliance with AFI 32-1063, whether new or replacement.

(4) Environmental approval of the engine emission must be received.

(5) Generators must be in compliance with all applicable regulations and permits (40 CFR

63, Subpart ZZZZ, 40 CFR 60, Subpart IIII, Title V Permit, etc).

(6) Generators shall be equipped with a Non-Resettable Hour Meter.

(7) Fuel storage tanks shall be double wall construction.

(8) Integral Fuel Storage Tank shall provide 24 hours of service, based on engine maximum load consumption.

(c) Static Grounding of fuel tank shall comply with NFPA 30 and UFC 3-460-03 Operation and

Maintenance: Maintenance of Petroleum Systems paragraph 9.5.

(d) The emergency generator one-line diagram shall be posted at the generator location.

(1) The One Line Diagram shall contain the following information.

i. Generator Model#, Serial#, Voltage, and Size (KVA & KW),

ii. Transfer Switch Size (KVA & KW), Voltage Rating, Number of Poles, Open or

Closed Transition, Location of Transfer Switch (Bldg & Room #), if not mounted locally at the generator.

iii. Normal Power Source (Bldg #, Room #, Panel Name), Circuit Number and Breaker

Size

iv. Emergency Panel Identification, Location (Bldg & Room #), if not mounted locally at the generator.

v. Conductor Sizes (between Normal Power, Generator, Transfer Switch and Panels)

(e) Provide combination automatic transfer switches with integral manual bypass. All transfer switches shall be 4-pole with switched neutral for each permanent generator installation.

(f) Emergency generator installations shall be placed in existing equipment yards or provided with suitable enclosure (fenced yard) to hide from public view. Where suitable enclosure cannot be provided, generators shall be factory painted a base standard color as determined by 72ABW/CE Architects which may not be a manufacturer’s standard color.

(g) Provide non-fused disconnect and 4-pole three-way (manual transfer) switches on outside of facility for portable generator connection when authorized by AFI 32-1063 and with prior written 72ABW/CE approval.

2.7 Exterior Lighting – Parking Lot, Roadway, Fitness Trails, and Walking Paths

(a) Exterior lighting is a system that has direct and indirect impacts on the visual qualities of the base. During the day the fixtures and poles are visible. At night the light becomes dominant to signify safety and security and to enhance the visual character of the base. The use of consistent lighting components and the reduction of overhead utilities will help unify the base appearance.

(b) Keep mounting heights low to Control spillover light near residential areas. Any lights mounted over 30 feet high require special review by 72ABW/CE.

(c) Use only aluminum or steel poles, taking into consideration the economics and aesthetics.

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(d) All power and light poles, steel support structures and their foundations, shall be designed for

NESC Heavy Loading District conditions and 100 mph wind loads on bare structure face.

(e) All parking/roadway lighting fixtures shall be supplied with Light Emitting Diode (LED) fixtures unless a written waiver from 72ABW/CE is obtained.

(1) LED Fixtures shall comply with current ETL requirements.

(2) Color temperature of LED Exterior Lighting Fixtures shall be 4000K.

(f) Photoelectric controls with over-ride astronomical timers shall be used on all exterior lighting for energy conservation, unless specifically deleted in project requirements (such as for security lighting).

(g) Where a ground rod is specified to be installed at light poles, the connection of the bonding conductor at the ground rod, and at the concrete encased reinforcement of the base, shall be either exothermic weld process, or irreversible compression connector listed for the purpose.

Mechanical lugs or connections shall not be allowed.

(h) A minimum of 100 hours of “Burn-in time” shall be performed before acceptance and final inspection.

3. Interior Electrical:

3.1 General

(a) Riser and one-line diagrams shall show vertical and electrical relationships. Riser shall include voltage, amperage, and short circuit interrupting capacity at each transformer, switchboard, panelboard, and motor control center. Devices shall also indicate the room location they are installed.

(1) A framed One-Line Drawing shall be posted by the contractor in the Main Building

Service room and/or any distribution switchgear room where new electrical equipment is installed or modifications are made.

(b) All new electrical equipment shall be flush mounted except where noted otherwise on the design plans.

3.2 Interior Wiring System

3.2.1 General

(a) A common neutral and equipment ground may be used in branch circuit home runs to a single panel subject to the following conditions:

(1) In a three-phase, four-wire system, a maximum of three opposite phase conductors shall share a common neutral or equipment ground (multi-wire branch circuit).

(2) In a single phase system, a maximum of two opposite phase conductors shall share a common neutral or equipment ground.

(3) On multi-wire branch circuits, approved breaker ties or multi-pole breaker with internal interlocked trip shall provide a means to simultaneously open all ungrounded conductors at the panelboard where the branch circuit originates.

(4) The wire size of the equipment ground shall be selected to accommodate the largest over current device of the circuit conductors within the same raceway.

(5) When the sizes of the ungrounded conductors are increased to account for voltage drop, etc., the equipment-grounding conductor shall be increased in size proportionately in relation to the circular mil area of the ungrounded conductors.

(6) For “dedicated” computer circuits (such as used in system furniture wiring), the neutral conductor shall not be shared.

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(7) Junction box covers shall be clearly identified. Identification shall include the circuit number and the panel from which it originates. Junction box covers shall also include the voltage present.

(8) All wiring devices (receptacles, switches, etc.) shall have a minimum rating of 20 amps.

3.2.2 Conduit

(a) All wiring for power, fire alarm and controls shall be in metallic raceway.

(b) Indoor medium-voltage (primary) wiring shall be in appropriately marked rigid galvanized steel conduit or cable tray.

(c) Secondary voltage wiring may be in rigid steel or EMT. ENT shall not be used.

(d) Flexible metal conduit (FMC) shall only be used for equipment connections (appliances, luminaries), and to fish into existing walls and shall not be used for general wiring applications.

(e) Equipment that requires flexibility at connections, to include but not limited to motors and transformers, shall utilize liquid-tight flexible metal conduit (LFMC). LFMC used outdoors shall be listed and identified on the outer shield as “sun light resistant” or similar verbiage.

(f) When PVC is used underground, all conduit which extends from excavations above finished grade, shall be galvanized rigid conduit, starting from minimum depth as specified and include the 90 deg. elbow. All rigid conduit which contacts the earth shall have a Factory

Applied PVC Coating. PVC tape may only be used to protect threaded areas and where adapting to PVC.

(g) No metal-clad cable, (Type MC), shall be permitted. Exception: Metal Clad (MC) cable shall be allowed when factory installed wired whips are provided by the manufacturer with new luminaries. Exceptions must be approved by 72ABW/CE for real property electrical systems or 776 MXSS for non-real property electrical systems.

(h) All raceways shall be concealed above ceiling, under floor, or in walls, except where noted on the design plans. No exposed raceways shall be permitted on exterior building surfaces.

Exceptions must be approved by 72ABW/CE.

(i) Raceways shall not be supported by suspended ceiling or suspended ceiling support wires.

Only wires installed and approved per the NEC shall be permitted for supporting raceway.

(j) Where possible, raceways to roof mounted equipment shall be routed beneath the roof structure to a penetration immediately adjacent to the equipment.

(k) All raceway penetrations through established fire barriers shall be sealed with an approved fire stopping material.

(l) All unused conduit in renovated areas shall be removed to the source. Conduit installed in concrete or masonry walls may be abandoned in place with 72ABW/CE approval.

(m) Factory expansion fittings are required for conduit, cable tray, and busduct when crossing building expansion joints or changes in temperature of greater than 25 degrees F from one area to the other. FMC is not acceptable.

3.2.3 Wire

(a) Insulated conductors shall be copper, type THHN, unless otherwise specified on the design plans or as code requires.

(b) Insulated conductors to be installed in wet locations (i.e. below grade) shall be type THHW, THWN, THHN-2 or an approved equal.

(c) Insulated conductors used for a new service mast or a new utility pole riser shall be identified on the outer insulation layer as “sunlight resistant”.

Page 13 of 23 Revised: 01-JAN-2015

(d) Wire shall be stranded for all sizes. On branch circuit feeders for general purpose wiring #12 solid is preferred for ease of termination, however #12 stranded may be used for ease of installation when the approved crimp termination is used at the device.

(e) All unused wiring in renovated areas shall be removed to the source.

3.2.4 Busduct

(a) Grounding shall be integral type, utilizing the case of the busduct as the equipment grounding conductor with approved splicing and joint construction.

(b) Neutral bus, where required, shall be rated at 100% of the current carrying bus bar rating.

3.3 Transformers

3.3.1 Transformers shall meet the following criteria:

(a) All transformers shall have copper bussing and windings. Transformers 75KVA and below may have aluminum windings if approved by 72ABW/CE or 776 MXSS.

(b) Transformers shall have, as a minimum, four (4) 2.5% taps (2+, 2- nominal voltage).

(c) Transformers serving non-linear loads shall have appropriate K-factor rating.

3.3.2 Transformer installation:

(a) Conductor sizing (primary and secondary) for new transformer installations shall be rated not less than 125% of the transformer rated current.

(b) Where K-rated transformers are utilized. Neutral conductors shall be up-sized as required.

(c) Ventilation (distance from walls) shall be as specified by the manufacturer. Normally the recommended clearances are listed on the transformer data plate.

(d) Transformers shall be secured to floors using the four mounting holes provided by the manufacturer.

(e) All new raceway installations to new/existing transformers shall have insulated grounding bushings installed.

(f) There shall be no modification (i.e. drilling holes bigger) of connectors being used for conductor terminations to the transformer bushings.

(g) Connections to the MV primary bushings shall comprise of bronze bolts, bronze flat washers, bronze lock washers and bronze nuts. Bronze or cadmium bolts, flat washers, lock washers and nuts may be used on the secondary bushings.

(h) The bolts used to secure the MV cable terminations to the transformer bushing shall be of the same diameter as the manufactures hole in the transformer bushing.

(i) Conductor terminations for low voltage transformers (600 volts and less) shall be made utilizing compression style terminations.

(j) All bolts used to secure the cable terminations to the transformer bushings shall be tightened to the torque specified for that particular diameter of bolt. Tightening shall be performed using a calibrated torque wrench. After tightening, each connection shall be marked per industry standards using a grease pen or permanent marker.

(k) All ground terminations secured to the transformer case shall have the factory paint removed prior to the installation of the ground lug. The diameter of the removed paint area shall exceed the mounting surface area of the termination to allow for inspection.

(l) All ground terminations secured to the transformer case shall comprise of a drilled hole

(same diameter hole as in the ground lug), bronze bolt, bronze flat washer, bronze lock washer and bronze nut. Ventilation openings on the bottom of transformers shall not be used as bolt holes for the securing of any ground termination/bus.

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(m) Bolts used to secure ground lugs to the transformer case shall be tightened to the torque specified for that particular diameter of bolt. Tightening shall be performed using a calibrated torque wrench. After tightening, each connection shall be marked per industry standards using a grease pen or permanent marker.

3.3.3 Transformer Bonding:

(a) Transformer bonding shall be completed in strict compliance with Article 250 of the NEC.

(b) Resistance readings shall be obtained, officially documented, and become a matter of record on all new grounding electrode system installations. This same requirement shall apply to any existing transformer installation to be altered/tapped due to new electrical design requirements.

(c) New transformer installations and existing transformers that have been altered or tapped shall not be energized until the grounding system has been inspected and approved by a government representative.

(d) All grounding electrode conductor (GEC) connections to ground rods, building steel and metal bar joists shall comprise of the exothermic welding process or an approved connector listed for the purpose. Mechanical lugs shall not be allowed.

(e) All GEC connections to fire sprinkler piping, steam piping and water piping shall comprise of a pipe clamp listed for the purpose. Mechanical piping systems utilizing Victaulic connections shall not be used as a grounding electrode.

(f) Grounding conductor bonding terminations shall be made utilizing compression style terminations.

(g) The penetration for the GEC into the new/existing transformer shall comprise of listed bushings or metal fitted locknut. Drilling a hole or using the ventilation openings on the bottom of the transformer to install the new GEC shall not be allowed.

(h) As required for physical protection, the GEC shall be installed within a raceway. The raceway shall be either electrical metallic tubing (EMT) or rigid metal conduit (RMC).

Grounding bushings shall be installed (on both ends) of the new raceway. PVC raceways shall not be used for the physical protection of a GEC.

(i) All transformers directly feeding distribution panels shall bond the neutral at the transformer

X0 terminal and to building ground reference. Neutral buss bonding is also required at the first point of service in the building.

3.3.4 Transformer output voltage shall be verified at commissioning of system and load taps adjusted to provide voltage ± 2% of nominal.

3.4 Panelboards, Switchboards, Safety Switches, Motor Control Centers

(a) Panelboards, switchboards, safety switches and motor control centers (MCCs) shall be provided with a dedicated space equal to the width and depth of the equipment and extending from the floor to a height of 6 feet above the equipment (per NEC) or to the structural ceiling, whichever is lower. No piping, ducts, or equipment foreign to the electrical installation shall be located in this space. Sprinkler protection shall be permitted if the electrical equipment is protected from water leakage.

(b) All electrical distribution equipment rated 1200amps and larger shall be Arc Resistant Rated.

(c) Every circuit and circuit modification shall be legibly identified as to its clear, evident, and specific purpose or use. The identification shall include sufficient detail to allow each circuit to be distinguished from all others.

(1) Circuits for panelboards shall be identified using a directory located inside the panel door

(mounted behind a clear protective cover/holder). In addition, panelboard directories

Page 15 of 23 Revised: 01-JAN-2015 shall also indicate panel identifier (provided by 72ABW/CE), “Fed from” information, and the date of installation.

(2) A new typewritten panel schedule shall be supplied for any additions or modifications to the circuitry. Handwritten changes to the panel schedule are not acceptable.

(3) Circuits for switchboards and MCCs shall be identified using an engraved 2-plex acrylic label at each switch position. In addition, switchboards and motor control centers shall also include an engraved 2-plex acrylic label indicating switchboard/MCC identifier

(provided by 72ABW/CE), “Fed from” information, and the date of installation.

(d) All new panelboards shall be identified using an engraved 2-plex acrylic label.

Example:

PANEL “PP1”

480Y/277 VOLT, 30, 4W, 400A/3P MCB

18kAIC RATING

FED FROM MDP-12 IN ROOM E101

INSTALLED DD/MM/YYYY

(1) Equipment Nameplates shall be 2”tall x 5” wide custom engraved tile, 2-plex acrylic, white on black core to include the following information.

i. Equipment Name in 3/8" Minimum Height Lettering

ii. Voltage, Ampacity Rating and Type in 1/8" Minimum Height Lettering

iii. Equipment AIC Rating in 1/8" Minimum Height Lettering

iv. Feeder Source of Supply description and location in 1/8" Minimum Height Lettering

v. Installation Date MM/DD/YYYY in 1/8" Minimum Height Lettering

(2) Mounting shall be made utilizing Stainless Steel Screws.

(3) Mounting holes shall be sealed with silicone rubber.

(e) All new panelboards shall be equipped with a properly sized Main Circuit Breaker.

(f) All new panelboards shall have copper buses.

(g) All new panelboards fed from K-rated transformers shall be rated for non-linear loads (200% neutral).

(h) All new panelboards and switchboards shall be supplied with 25% spare circuit breakers or maximum spaces filled for future expansion, whichever is larger.

(i) A separate, listed equipment ground bar kit (not bonded to the neutral bus) shall be provided in all new panelboards.

(j) All new panelboards shall contain provisions for bolt-on type branch circuit breakers.

(k) All new circuit breakers shall be bolt-on type.

(l) A minimum of two spare ¾” conduits shall be stubbed and capped off from each new flush mounted branch circuit panel to above ceiling and below accessible floor

(m) All new safety switches shall be listed for heavy duty (HD) applications.

(n) Grounding conductor bonding terminations shall be made utilizing compression style terminations.

(o) All new conductor termination points in new panelboards, switchboards, safety switches and motor control centers shall have the bolts tightened to the torque specified on the label attached by the manufacturer within the equipment.

(p) All conduit fittings utilizing “Concentric Knock-outs” shall have grounding bushings installed for systems 250 volts or higher.

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3.5 Motors and Motor Controls

(a) Premium efficiency motors shall be utilized for all applications 25 Hp or larger.

(b) All motors controlled by a Variable Frequency Drive (VFD) shall be Inverter Duty Rated.

(c) Provide phase loss relay for each motor greater than 25 HP in size. The phase loss relay shall be integral part of starter, and shall NOT require a separate enclosure.

(d) Conductors for motors shall be sized in accordance with the NEC amperage x 125%, not the data plate full load amps. Exception: HVAC equipment.

(e) Motor Conductor Terminations for all voltages of #6 conductors and smaller shall be made utilizing crimp-on style ring terminals with bolt, nut washers and lock washers. Proper insulating tape per NEIS motor terminations shall be used. Twist-On style terminations are not allowed. Motors with #4 or larger conductors may be made utilizing “Insul-Lug” style mechanical multi barrel lug.

(f) Motor overloads (heaters) shall be sized utilizing the motor data plate full load amps and motor data plate service factor.

(g) All VFDs shall be supplied with manual integral bypass for emergency operation in the event of a VFD failure. The Bypass shall be constructed so that the VFD may be safely serviced and/or repaired while the VFD bypass is energized.

3.6 Systems Furniture

(a) User organizations will be responsible to provide designer with the proposed new system furniture layout (scaled drawing) and specifications on the system furniture to be purchased. Design information shall include but not limited to, wiring (type and size), raceways (type and size), j-boxes (size, wall or ceiling mounted), volt amps and voltage of each unit for connection of the system furniture. Reference NEC Handbook Section 605.6

Fixed-Type Partitions and 605.7 Freestanding-Type Partitions for multi-wire circuit breaker requirements.

(b) Each “cubicle” (or renovated walled office) shall be provided with one designated computer duplex receptacle (Orange) on a separate circuit. Circuit may be shared among multiple cubicles or offices; however, never more than four (4) designated computer duplex receptacles will share a single circuit. For electrical calculation purposes, for update of an existing panelboard directory, or to construct a new panelboard directory, a load of 480 volt amps (VA) shall be used for each computer duplex receptacle.

(c) Each cubicle (or renovated walled office) shall be provided with a minimum of two (2) additional general use duplex receptacles. Duplex receptacles may share a single circuit, or be provided with separate circuits. Circuits may be shared among multiple cubicles;

however, never more than Eight (8) duplex receptacles will share a single circuit. For electrical calculation purposes, for update of an existing panelboard directory, or to construct a new panelboard directory, a load of 180 volt amps (VA) shall be used for each of the eight duplex receptacles.

(d) Each circuit shall have a separate neutral conductor. Where more than one neutral conductor terminates in a junction box, each neutral conductor shall be identified with its corresponding circuit number.

(e) Due to harmonics generated by computer power supplies, the neutral conductor shall be considered current carrying for all wire sizing (de-rating) calculations.

3.7 Interior Lighting

3.7.1 General

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(a) Illumination Levels - General illumination levels shall not exceed the intensities shown in the latest edition of UFC-3-530-01 Interior and Exterior Lighting and Controls. Where lighting intensities are not indicated in UFC-3-530-01, the IES Lighting Handbook shall be used.

(b) Lighting shall be installed using 277V where available.

(c) Overhead lighting fixtures for buildings (interior lighting) shall comply with design requirements of UFC 4-010-01, paragraph B-3.6 and B-4.5, antiterrorism provisions.

(d) Provide luminaire supports that are independent of the ceiling system and ceiling supports for suspended or grid ceilings. Attach safety and seismic supports for luminaires to main structure, concrete or steel floor deck, beams, columns, etc. Safety supports for luminaire components, such as reflectors, may be attached to the luminaire itself.

(e) Fixture whips must be supported independently of the ceiling grid. Coiling of the fixture whip and placing on top of the fixture shall not be permitted.

(f) Test instruments used to measure both normal and emergency illumination levels shall contain a current calibration sticker that indicates the current calibration date and the date due for the next calibration.

(g) Emergency Lighting:

(1) Emergency lighting must be provided in accordance with latest edition of NFPA 101 and

ETL 99-4. Normally, emergency lighting is required along paths of egress. Emergency lights shall also be provided in mechanical and electrical equipment rooms, interior windowless conference rooms and classrooms and large office areas.

(2) Twin head “lunchbox” style light fixtures…