4-Addendum 2 Attachment A- Service Consolidation Specifications.pdf

ELECTRICAL SERVICE CONSOLIDATION KSG CONSULTING ENGINEERS

IEHP PROJECT NO. 14822

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

Table of Contents

Division Section Title Pages

SPECIFICATIONS GROUP

Facility Services Subgroup

DIVISION 26 - ELECTRICAL

260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 6

260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 8

260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 6

260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 12

260544 SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND CABLING 4

260548 VIBRATION AND SEISMIC CONTROLS FOR ELECTRICAL SYSTEMS 8

260553 IDENTIFICATION FOR ELECTRICAL SYSTEMS 6

260573 OVERCURRENT PROTECTIVE DEVICE COORDINATION STUDY 8

260800 ELECTRICAL SYSTEMS COMMISSIONING 6

262413 SWITCHBOARDS 10

263623 AUTOMATIC TRANSFER SWITCH 11

END OF TABLE OF CONTENTS

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-1

SECTION 26 05 19 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Building wires and cables rated 600 V and less.

2. Connectors, splices, and terminations rated 600 V and less.

B. Related Requirements:

1. Section 26 0513 "Medium-Voltage Cables" for single-conductor and multiconductor cables, cable splices, and terminations for electrical distribution systems with 2001 to 35,000 V.

1.3 DEFINITIONS

A. VFC: Variable frequency controller.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For testing agency.

B. Field quality-control reports.

1.6 QUALITY ASSURANCE

A. Testing Agency Qualifications: Member company of NETA or an NRTL.

1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-2

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Americon Insulated Wire Corp: A Leviton Company.

2. Senator Wire and Cable.

3. General Cable Technologies Corporation.

4. Southwire Incorporated.

B. Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658.

C. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 for Type THHN-2-

THWN-2.

2.2 CONNECTORS AND SPLICES

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. AFC Cable Systems, Inc.

2. Hubbell Power Systems, Inc.

3. O-Z/Gedney; a brand of the EGS Electrical Group.

4. 3M; Electrical Markets Division.

5. Tyco Electronics.

B. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type, and class for application and service indicated.

2.3 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. Comply with NFPA 70.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Copper. Solid or stranded for No. 12 AWG and smaller; stranded for No. 10 AWG and larger.

http://www.specagent.com/LookUp/?uid=123456817811&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456836323&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802855&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802857&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802858&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802859&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817813&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817814&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802860&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-3

B. Branch Circuits: Copper. Solid or stranded for No. 12 AWG and smaller; stranded for No. 10 AWG and larger.

C. Minimum conductor sizes shall be as follows:

1. No. 12 AWG – branch circuits of any kind.

2. No. 14 AWG – Remote control and signal systems, fire alarm systems.

D. Branch wiring length limitations.

1. 208Y/120V circuits over 100ft in length: Increase wire size on size for each 60 ft of length. Increase conduit size as required.

2. 480Y/277V circuits over 150 ft in length: Increase wire size one size for each 150 ft of length. Increase conduit size as required.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING

METHODS

A. Service Entrance: Type THHN-2-THWN-2, single conductors in raceway.

B. Exposed Feeders: Type THHN-2-THWN-2, single conductors in raceway.

C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN-2- THWN-2, single conductors in raceway.

D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN- 2-THWN-2, single conductors in raceway.

E. Exposed Branch Circuits, Including in Crawlspaces: Type THHN-2-THWN-2, single conductors in raceway.

F. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN-2-THWN-2, single conductors in raceway.

G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground:

Type THHN-2-THWN-2, single conductors in raceway.

H. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless-steel, wire-mesh, strain relief device at terminations to suit application.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.

B. Complete raceway installation between conductor and cable termination points according to Section 26 0533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and cables.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-4

C. Use manufacturer-approved pulling compound or lubricant where necessary;

compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.

D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway.

E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and follow surface contours where possible.

F. Support cables according to Section 26 0529 "Hangers and Supports for Electrical Systems."

G. Complete cable tray systems installation according to Section 26 0536 "Cable Trays for Electrical Systems" prior to installing conductors and cables.

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A-486B.

B. Make splices, terminations, and taps that are compatible with conductor material and that possess equivalent or better mechanical strength and insulation ratings than unspliced conductors.

C. Wiring at Outlets: Install conductor at each outlet, with at least 12 inches (300 mm) of slack.

3.5 IDENTIFICATION

A. Identify and color-code conductors and cables according to Section 26 0553 "Identification for Electrical Systems."

B. Identify each spare conductor at each end with identity number and location of other end of conductor, and identify as spare conductor.

3.6 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS

A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies.

Comply with requirements in Section 26 0544 "Sleeves and Sleeve Seals for Electrical Raceways and Cabling."

3.7 FIRESTOPPING

A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly according to Section 07 8413 "Penetration Firestopping."

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-5

3.8 FIELD QUALITY CONTROL

A. Perform the following tests and inspections with the assistance of a factory-authorized service representative:

1. After installing conductors and cables and before electrical circuitry has been energized, test service entrance and feeder conductors for compliance with requirements.

2. Perform each visual and mechanical inspection and electrical test stated in NETA Acceptance Testing Specification. Certify compliance with test parameters.

3. Consider the cost and benefit of infrared scanning of cable and conductor splices before retaining "Infrared Scanning" Subparagraph below.

4. Infrared Scanning: After Substantial Completion, but not more than 60 days after Final Acceptance, perform an infrared scan of each splice in conductors No. 3 AWG and larger. Remove box and equipment covers so splices are accessible to portable scanner. Correct deficiencies determined during the scan.

a. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each splice 11 months after date of Substantial Completion.

b. Instrument: Use an infrared scanning device designed to measure temperature or to detect significant deviations from normal values. Provide calibration record for device.

c. Record of Infrared Scanning: Prepare a certified report that identifies splices checked and that describes scanning results. Include notation of deficiencies detected, remedial action taken, and observations after remedial action.

B. Test and Inspection Reports: Prepare a written report to record the following:

1. Procedures used.

2. Results that comply with requirements.

3. Results that do not comply with requirements and corrective action taken to achieve compliance with requirements.

C. Cables will be considered defective if they do not pass tests and inspections.

END OF SECTION

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 26 05 19-6

Intentionally Left Blank

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-1

SECTION 26 05 26 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes: Grounding systems and equipment.

B. Section includes grounding systems and equipment, plus the following special applications:

1. Underground distribution grounding.

2. Ground bonding common with lightning protection system.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

1.4 INFORMATIONAL SUBMITTALS

A. Informational Submittals: Plans showing dimensioned as-built locations of grounding features specified in "Field Quality Control" Article, including the following:

1. Test wells.

2. Ground rods.

3. Ground rings.

4. Grounding arrangements and connections for separately derived systems.

5. Grounding for sensitive electronic equipment.

B. Qualification Data: For qualified testing agency and testing agency's field supervisor.

C. Field quality-control reports.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For grounding to include in emergency, operation, and maintenance manuals. In addition to items specified in Section 01 7823 "Operation and Maintenance Data," include the following:

1. Instructions for periodic testing and inspection of grounding features at based on

NETA MTS.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-2

a. Tests shall determine if ground-resistance or impedance values remain within specified maximums, and instructions shall recommend corrective action if values do not.

b. Include recommended testing intervals.

1.6 QUALITY ASSURANCE

A. Testing Agency Qualifications: Member company of NETA or an NRTL.

1. Testing Agency's Field Supervisor: Currently certified by NETA to supervise on-site testing.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

C. Comply with UL 467 for grounding and bonding materials and equipment.

PART 2 - PRODUCTS

2.1 CONDUCTORS

A. Insulated Conductors: Copper wire or cable insulated for 600 V unless otherwise required by applicable Code or authorities having jurisdiction.

B. Bare Copper Conductors:

1. Solid Conductors: ASTM B 3.

2. Stranded Conductors: ASTM B 8.

3. Tinned Conductors: ASTM B 33.

4. Bonding Cable: 28 kcmil, 14 strands of No. 17 AWG conductor, 1/4 inch (6 mm) in diameter.

5. Bonding Conductor: No. 4 or No. 6 AWG, stranded conductor.

6. Bonding Jumper: Copper tape, braided conductors terminated with copper ferrules; 1-5/8 inches (41 mm) wide and 1/16 inch (1.6 mm) thick.

7. Tinned Bonding Jumper: Tinned-copper tape, braided conductors terminated with copper ferrules; 1-5/8 inches (41 mm) wide and 1/16 inch (1.6 mm) thick.

C. Grounding Bus: Predrilled rectangular bars of annealed copper, 1/4 by 4 inches minimum (6.3 by 100 mm) in cross section, with 9/32-inch (7.14-mm) holes spaced 1- 1/8 inches (28 mm) apart. Stand-off insulators for mounting shall comply with UL 891 for use in switchboards, 600 V. Lexan or PVC, impulse tested at 5000 V.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-3

2.2 CONNECTORS

A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications in which used and for specific types, sizes, and combinations of conductors and other items connected.

B. Bolted Connectors for Conductors and Pipes: Copper or copper alloy, pressure type with at least two bolts.

1. Pipe Connectors: Clamp type, sized for pipe.

C. Welded Connectors: Exothermic-welding kits of types recommended by kit manufacturer for materials being joined and installation conditions.

D. Bus-bar Connectors: Mechanical type, cast silicon bronze, solderless exothermic-type wire terminals, and long-barrel, two-bolt connection to ground bus bar.

2.3 GROUNDING ELECTRODES

A. Ground Rods: Copper-clad steel 3/4 inch by 10 feet (19 mm by 3 m) in diameter.

PART 3 - EXECUTION

3.1 APPLICATIONS

A. Conductors: Install solid conductor for No. 8 AWG and smaller, and stranded conductors for No. 6 AWG and larger unless otherwise indicated.

B. Underground Grounding Conductors: Install bare tinned copper conductor, No. 2/0 AWG minimum.

1. Bury at least 24 inches (600 mm) below grade.

C. Isolated Grounding Conductors: Green-colored insulation with continuous yellow stripe. On feeders with isolated ground, identify grounding conductor where visible to normal inspection, with alternating bands of green and yellow tape, with at least three bands of green and two bands of yellow.

D. Grounding Bus: Install in electrical and telephone equipment rooms, in rooms housing service equipment, and elsewhere as indicated.

1. Install bus on insulated spacers 2 inches (50 mm) minimum from wall, 6 inches (150 mm) above finished floor unless otherwise indicated.

2. Where indicated on both sides of doorways, route bus up to top of door frame, across top of doorway, and down to specified height above floor; connect to horizontal bus.

E. Conductor Terminations and Connections:

1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-4

2. Underground Connections: Welded connectors except at test wells and as otherwise indicated.

3. Connections to Ground Rods at Test Wells: Bolted connectors.

4. Connections to Structural Steel: Welded connectors.

3.2 GROUNDING UNDERGROUND DISTRIBUTION SYSTEM COMPONENTS

A. Comply with IEEE C2 grounding requirements.

B. Grounding Connections to Manhole Components: Bond exposed-metal parts such as inserts, cable racks, pulling irons, ladders, and cable shields within each manhole or handhole, to ground rod or grounding conductor. Make connections with No. 4 AWG minimum, stranded, hard-drawn copper bonding conductor. Train conductors level or plumb around corners and fasten to manhole walls. Connect to cable armor and cable shields according to written instructions by manufacturer of splicing and termination kits.

C. Pad-Mounted Transformers and Switches: Install two ground rods and ground ring around the pad. Ground pad-mounted equipment and noncurrent-carrying metal items associated with substations by connecting them to underground cable and grounding electrodes. Install tinned-copper conductor not less than No. 2 AWG for ground ring and for taps to equipment grounding terminals. Bury ground ring not less than 6 inches (150 mm) from the foundation.

3.3 EQUIPMENT GROUNDING

A. Install insulated equipment grounding conductors with all feeders and branch circuits.

B. Install insulated equipment grounding conductors with the following items, in addition to those required by NFPA 70:

1. Feeders and branch circuits.

2. Lighting circuits.

3. Receptacle circuits.

4. Single-phase motor and appliance branch circuits.

5. Three-phase motor and appliance branch circuits.

6. Flexible raceway runs.

7. Computer and Rack-Mounted Electronic Equipment Circuits: Install insulated equipment grounding conductor in branch-circuit runs from equipment-area power panels and power-distribution units.

C. Air-Duct Equipment Circuits: Install insulated equipment grounding conductor to duct-mounted electrical devices operating at 120 V and more, including air cleaners, heaters, dampers, humidifiers, and other duct electrical equipment. Bond conductor to each unit and to air duct and connected metallic piping.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-5

D. Water Heater, Heat-Tracing, and Antifrost Heating Cables: Install a separate insulated equipment grounding conductor to each electric water heater and heat-tracing cable.

Bond conductor to heater units, piping, connected equipment, and components.

E. Isolated Grounding Receptacle Circuits: Install an insulated equipment grounding conductor connected to the receptacle grounding terminal. Isolate conductor from raceway and from panelboard grounding terminals. Terminate at equipment grounding conductor terminal of the applicable derived system or service unless otherwise indicated.

F. Isolated Equipment Enclosure Circuits: For designated equipment supplied by a branch circuit or feeder, isolate equipment enclosure from supply circuit raceway with a nonmetallic raceway fitting listed for the purpose. Install fitting where raceway enters enclosure, and install a separate insulated equipment grounding conductor. Isolate conductor from raceway and from panelboard grounding terminals. Terminate at equipment grounding conductor terminal of the applicable derived system or service unless otherwise indicated.

G. Signal and Communication Equipment: In addition to grounding and bonding required by NFPA 70, provide a separate grounding system complying with requirements in

TIA/ATIS J-STD-607-A.

1. For telephone, alarm, voice and data, and other communication equipment, provide No. 4 AWG minimum insulated grounding conductor in raceway from grounding electrode system to each service location, terminal cabinet, wiring closet, and central equipment location.

2. Service and Central Equipment Locations and Wiring Closets: Terminate grounding conductor on a 1/4-by-4-by-12-inch (6.3-by-100-by-300-mm) grounding bus.

3. Terminal Cabinets: Terminate grounding conductor on cabinet grounding terminal.

H. Separately derived electrical system grounding:

1. Ground each separately derived system per requirements in CEC as a minimum, unless greater requirements are stated elsewhere in the contract documents.

2. Transformers: Provide a dual rated four or six-barrel grounding lug with a

5/8", 11 threaded hole. Drill enclosure with 11/16" bit and attach lug to enclosure utilizing a torque bolt and a dragon tooth transition washer or equal.

Connect the following when present:

a. Grounding electrode conductor.

b. Primary feeder ground.

c. Secondary feeder ground.

d. Main bond jumper.

e. Isolated ground conductor (where applicable).

3.4 INSTALLATION

A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwise indicated or required by Code. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-6

B. Ground Bonding Common with Lightning Protection System: Comply with NFPA 780 and UL 96 when interconnecting with lightning protection system. Bond electrical power system ground directly to lightning protection system grounding conductor at closest point to electrical service grounding electrode. Use bonding conductor sized same as system grounding electrode conductor, and install in conduit.

C. Ground Rods: Drive rods until tops are 2 inches (50 mm) below finished floor or final grade unless otherwise indicated.

1. Interconnect ground rods with grounding electrode conductor below grade and as otherwise indicated. Make connections without exposing steel or damaging coating if any.

2. For grounding electrode system, install at least 2 rods spaced at least one-rod length from each other and located at least the same distance from other grounding electrodes, and connect to the service grounding electrode conductor.

D. Test Wells: Ground rod driven through drilled hole in bottom of handhole. Handholes are specified in Section 26 0543 "Underground Ducts and Raceways for Electrical Systems," and shall be at least 12 inches (300 mm) deep, with cover.

1. Test Wells: Install at least one test well for each service unless otherwise indicated.

Install at the ground rod electrically closest to service entrance. Set top of test well flush with finished grade or floor.

E. Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenance except where routed through short lengths of conduit.

1. Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrate any adjacent parts.

2. Bonding to Equipment Mounted on Vibration Isolation Hangers and Supports:

Install bonding so vibration is not transmitted to rigidly mounted equipment.

3. Use exothermic-welded connectors for outdoor locations; if a disconnect-type connection is required, use a bolted clamp.

F. Grounding and Bonding for Piping:

1. Metal Water Service Pipe: Install insulated copper grounding conductors, in conduit, from building's main service equipment, or grounding bus, to main metal water service entrances to building. Connect grounding conductors to main metal water service pipes; use a bolted clamp connector or bolt a lug-type connector to a pipe flange by using one of the lug bolts of the flange. Where a dielectric main water fitting is installed, connect grounding conductor on street side of fitting.

Bond metal grounding conductor conduit or sleeve to conductor at each end.

2. Water Meter Piping: Use braided-type bonding jumpers to electrically bypass water meters. Connect to pipe with a bolted connector.

3. Bond each aboveground portion of gas piping system downstream from equipment shutoff valve.

G. Bonding Interior Metal Ducts: Bond metal air ducts to equipment grounding conductors of associated fans, blowers, electric heaters, and air cleaners. Install tinned bonding jumper to bond across flexible duct connections to achieve continuity.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-7

H. Ufer Ground (Concrete-Encased Grounding Electrode): Fabricate according to NFPA 70;

use a minimum of 20 feet (6 m) of bare copper conductor not smaller than No. 1/0 AWG.

1. If concrete foundation is less than 20 feet (6 m) long, coil excess conductor within base of foundation.

2. Bond grounding conductor to reinforcing steel in at least four locations and to anchor bolts.

3.5 LABELING

A. Comply with requirements in Section 26 0553 "Identification for Electrical Systems" for instruction signs. The label or its text shall be green.

3.6 FIELD QUALITY CONTROL

A. Perform tests and inspections.

1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.

B. Tests and Inspections:

1. After installing grounding system but before permanent electrical circuits have been energized, test for compliance with requirements.

2. Inspect physical and mechanical condition. Verify tightness of accessible, bolted, electrical connections with a calibrated torque wrench according to manufacturer's written instructions.

3. Test completed grounding system at each location where a maximum ground-resistance level is specified, at service disconnect enclosure grounding terminal, at ground test wells, and at individual ground rods. Make tests at ground rods before any conductors are connected.

a. Measure ground resistance no fewer than two full days after last trace of precipitation and without soil being moistened by any means other than natural drainage or seepage and without chemical treatment or other artificial means of reducing natural ground resistance.

b. Perform tests by fall-of-potential method according to IEEE 81.

4. Prepare dimensioned Drawings locating each test well, ground rod and ground-rod assembly, and other grounding electrodes. Identify each by letter in alphabetical order, and key to the record of tests and observations. Include the number of rods driven and their depth at each location, and include observations of weather and other phenomena that may affect test results. Describe measures taken to improve test results.

C. Grounding system will be considered defective if it does not pass tests and inspections.

D. Prepare test and inspection reports.

E. Report measured ground resistances that exceed the following values:

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 26 05 26-8

1. Power and Lighting Equipment or System with Capacity of 500 kVA and Less: 10 ohms.

2. Power and Lighting Equipment or System with Capacity of 500 to 1000 kVA: 5 ohms.

3. Power and Lighting Equipment or System with Capacity More Than 1000 kVA: 3 ohms.

4. Power Distribution Units or Panelboards Serving Electronic Equipment: 3 ohm(s).

5. Main Service Switchboard: 5 ohms.

6. Pad-Mounted Equipment: 5 ohms.

7. Manhole Grounds: 10 ohms.

F. Excessive Ground Resistance: If resistance to ground exceeds specified values, notify University promptly and include recommendations to reduce ground resistance.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-1

SECTION 26 05 29 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Hangers and supports for electrical equipment and systems.

2. Construction requirements for concrete bases.

B. Related Sections include the following:

1. Section 26 0548 "Vibration and Seismic Controls for Electrical Systems" for products and installation requirements necessary for compliance with seismic criteria.

1.3 DEFINITIONS

A. EMT: Electrical metallic tubing.

B. RMC: Rigid metal conduit.

1.4 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design supports for multiple raceways, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.

B. Design supports for multiple raceways capable of supporting combined weight of supported systems and its contents.

C. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components.

D. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loads calculated or imposed for this Project, with a minimum structural safety factor of five times the applied force.

1.5 ACTION SUBMITTALS

A. Product Data: For the following:

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-2

1. Steel slotted support systems.

2. Nonmetallic slotted support systems.

B. Shop Drawings: Signed and sealed by a qualified professional engineer. Show fabrication and installation details and include calculations for the following:

1. Trapeze hangers. Include Product Data for components.

2. Steel slotted channel systems. Include Product Data for components.

3. Nonmetallic slotted channel systems. Include Product Data for components.

4. Equipment supports.

1.6 INFORMATIONAL SUBMITTALS

A. Welding certificates.

1.7 QUALITY ASSURANCE

A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel."

B. Comply with NFPA 70.

1.8 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases.

Concrete, reinforcement, and formwork requirements are specified together with concrete Specifications.

B. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items are specified in Section 07 7200 "Roof Accessories."

PART 2 - PRODUCTS

2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS

A. Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for field assembly.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Allied Tube & Conduit.

b. Cooper B-Line, Inc.; a division of Cooper Industries.

c. ERICO International Corporation.

d. Thomas & Betts Corporation.

e. Unistrut; Tyco International, Ltd.

http://www.specagent.com/LookUp/?ulid=1736&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802891&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817835&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802892&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802894&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817836&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-3

2. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to

MFMA-4.

3. Channel Dimensions: Selected for applicable load criteria.

B. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

C. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported.

D. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for non-armored electrical conductors or cables in riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as required to suit individual conductors or cables supported.

Body shall be malleable iron.

E. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized.

F. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their supports to building surfaces include the following:

1. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete, steel, or wood, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used.

a. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1) Hilti Inc.

2) MKT Fastening, LLC.

2. Mechanical-Expansion Anchors: Insert-wedge-type, stainless steel, for use in hardened portland cement concrete with tension, shear, and pullout capacities appropriate for supported loads and building materials in which used.

a. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1) Cooper B-Line, Inc.; a division of Cooper Industries.

2) Hilti Inc.

3. Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSS Type 18; complying with MFMA-4 or MSS SP-58.

4. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable for attached structural element.

5. Through Bolts: Structural type, hex head, and high strength. Comply with

ASTM A 325.

6. Toggle Bolts: All-steel springhead type.

7. Hanger Rods: Threaded steel.

http://www.specagent.com/LookUp/?ulid=1742&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802899&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802900&mf=04&src=wd http://www.specagent.com/LookUp/?ulid=1746&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817840&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802902&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-4

2.2 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES

A. Description: Welded or bolted, structural-steel shapes, shop or field fabricated to fit dimensions of supported equipment.

B. Materials: Comply with requirements in Section 05 5000 "Metal Fabrications" for steel shapes and plates.

PART 3 - EXECUTION

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical equipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for EMT, IMC, and RMC as required by scheduled in NECA 1, where its Table 1 lists maximum spacings less than stated in NFPA 70. Minimum rod size shall be 1/4 inch (6

mm) in diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits.

1. Secure raceways and cables to these supports with single-bolt conduit clamps using spring friction action for retention in support channel.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this Article.

B. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb (90 kg).

C. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten electrical items and their supports to building structural elements by the following methods unless otherwise indicated by code:

1. To New Concrete: Bolt to concrete inserts.

2. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor fasteners on solid masonry units.

3. To Existing Concrete: Expansion anchor fasteners.

4. To Steel: Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69.

5. To Light Steel: Sheet metal screws.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-5

6. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets, panelboards, disconnect switches, control enclosures, pull and junction boxes, transformers, and other devices on slotted-channel racks attached to substrate by means that meet seismic-restraint strength and anchorage requirements.

D. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Section 05 5000 "Metal Fabrications" for site-fabricated metal supports.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor electrical materials and equipment.

C. Field Welding: Comply with AWS D1.1/D1.1M.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 26 05 29-6

Intentionally Left Blank

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-1

SECTION 26 05 33 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Metal conduits, tubing, and fittings.

2. Nonmetal conduits, tubing, and fittings.

3. Metal wireways and auxiliary gutters.

4. Surface raceways.

5. Boxes, enclosures, and cabinets.

B. Related Requirements:

1. Section 26 0543 "Underground Ducts and Raceways for Electrical Systems" for exterior ductbanks, manholes, and underground utility construction.

2. Identify and color-code conductors and cables according to Section 26 0553

"Identification for Electrical Systems."

C. Procedural Requirements:

1. Design considerations specific to components in this section.

a. The size of the raceways for the various circuits shall be as indicated on the Drawings and not less than required by California Electrical Code (Chapter 9, Annex, Table C1, based on "THW" insulation type) for the size and number of conductors to be pulled therein. CEC requirements shall prevail where fill is not shown on Drawings.

1) Minimum Raceway Size: 3/4 inch unless otherwise specified.

2) Minimum Raceway Size: 1 inch for underground installation.

3) Minimum Raceway Size: 5 inch for medium voltage cables.

4) Raceway size shall be increased to the next larger size where it shall be installed in slab or underground.

b. A separate raceway shall be installed for each homerun indicated on the Drawings.

1.3 DEFINITIONS

A. GRC: Galvanized rigid steel conduit.

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-2

1.4 ACTION SUBMITTALS

A. Product Data: For surface raceways, wireways and fittings, floor boxes, hinged-cover enclosures, and cabinets.

B. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and attachment details.

1.5 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Conduit routing plans, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of items involved:

1. Structural members in paths of conduit groups with common supports.

2. HVAC and plumbing items and architectural features in paths of conduit groups with common supports.

B. Seismic Qualification Certificates: For enclosures, cabinets, and conduit racks and their mounting provisions, including those for internal components, from manufacturer.

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

4. Detailed description of conduit support devices and interconnections on which the certification is based and their installation requirements.

C. Source quality-control reports.

PART 2 - PRODUCTS

2.1 METAL CONDUITS, TUBING, AND FITTINGS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Allied Tube & Conduit; a Tyco International Ltd. Co.

2. Western Tube and Conduit.

3. Sealtite Flexible Type “UA”.

4. Flex-Seal Type “XL”.

B. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

http://www.specagent.com/LookUp/?ulid=1747&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817842&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-3

C. GRC: Comply with ANSI C80.1 and UL 6.

1. Component Characteristics:

a. Required:

1) Provide high quality prime steel, standard weight raceway, hot-dipped galvanized inside and out. Treads shall be hot-dipped galvanized after cutting.

2) The wall thickness shall be uniform for the entire length with smooth and defect free interior.

3) Fitting shall be zinc coated, ferrous metal and threaded type. Split or bolt-on type is not acceptable.

b. Disallowed:

1) Electro-galvanizing is not permitted.

D. PVC Coated Metal Conduits:

1. Component Characteristics:

a. Required

1) Provide PVC coated rigid steel conduits and fittings with a half lap, 40 mil extruded PVC jacket. The jacket shall have high tensile strength, shall be highly resistant to corrosion and shall not oxidize or deteriorate or shrink when exposed to sunlight and weather. The jacket shall be flame retardant and shall not support combustion.

2) The interior of conduit and fittings shall be coated with urethane coating (two mil thickness) for protection against corrosion.

3) Fittings and accessories shall be provided by the same manufacturer and installed in accordance with the manufacturer's specifications.

E. EMT: Comply with ANSI C80.3 and UL 797.

1. Component Characteristics:

a. Required:

1) Provide tubing of high grade steel electrically welded with exterior protective coating of hot galvanized zinc, applied by the electro galvanized process.

2) Tubing shall be dipped in a chromic acid bath to chemically form a corrosion-resistant protective coating of zinc chromate over galvanized surface.

3) Interior surface shall be coated with aluminum lacquer or enamel.

4) Fitting shall be steel, watertight, gland ring compression type, wrench tightened connectors and couplings. Manufactured by Appleton, O-Z Gedney, Cooper/Crouse-Hinds.

b. All fittings to be compression type.

c. Disallowed: Set screw, Die Cast and indenter type fittings.

F. FMC: Comply with UL 1; zinc-coated steel.

1. Component Characteristics:

a. Required:

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-4

1) Provide conduit manufactured from single strip, standard weight steel hot-dipped galvanized on all four sides prior to conduit fabrication.

2) Provide die cast fittings of the type that screw into the inside of the conduit with threaded edges at 90 degrees to the fitting body to insure a force fit.

Fittings shall be manufactured by AFC, O-Z Gedney, T&B and Steel City.

3) General: flexible conduit and fittings shall provide positive ground continuity. Include a separate green grounding conductor in each run.

b. Disallowed:

1) Aluminum and light-weight steel conduits.

2) Binding screw type fittings.

G. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360.

1. Component Characteristics:

a. Required:

1) Provide conduit manufactured from single strip standard weight steel, hot dipped galvanized on all four sides prior to conduit fabrication and shall be provided with an extruded polyvinyl chloride cover.

2) Provide malleable iron, zinc plated fittings with locknut and O-ring seal and slim diameter with small turning radius. Manufactured by O-Z Gedney-4Q series, T&B- 5200 series or Appleton Flexible Fittings-ST series.

3) General: Liquidtight conduit and fittings shall provide positive ground continuity. Include a separate green grounding conductor in each run.

b. Disallowed: None

H. Fittings for Metal Conduit: Comply with NEMA FB 1 and UL 514B.

1. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 886 and

NFPA 70.

2. Fittings for EMT:

a. Material: Steel.

b. Type: Compression.

3. Expansion Fittings: PVC or steel to match conduit type, complying with UL 651, rated for environmental conditions where installed, and including flexible external bonding jumper.

I. Joint Compound for GRC: Approved, as defined in NFPA 70, by authorities having jurisdiction for use in conduit assemblies, and compounded for use to lubricate and protect threaded conduit joints from corrosion and to enhance their conductivity.

2.2 NONMETALLIC CONDUITS, TUBING, AND FITTINGS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. ARNCO Corp.

2. Beck Manufacturing.

3. Cantex, Inc.

4. CertainTeed Corp.; Pipe & Plastics Group.

http://www.specagent.com/LookUp/?ulid=1748&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802964&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802965&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802966&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817880&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-5

5. Condux International, Inc.

6. ElecSys, Inc.

7. Electri-Flex Company.

8. IPEX Inc.

9. Lamson & Sessions; Carlon Electrical Products.

10. Manhattan/CDT; a division of Cable Design Technologies.

11. Spiraduct/AFC Cable Systems, Inc.

B. Listing and Labeling: Nonmetallic conduits, tubing, and fittings shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

C. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated.

1. Component Characteristics:

a. Required:

1) Provide heavy wall virgin polyvinyl chloride Schedule 40 conduit rated for use with 90°C conductors.

2) The PVC shall conform to (UL) requirements and listed for exposed and direct burial application.

3) Fittings and cement shall be provided by the same manufacturer. All joints shall be solvent welded in accordance with the manufacturer's recommendations.

D. Fittings for RNC: Comply with NEMA TC 3; match to conduit or tubing type and material.

E. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less, respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2.3 METAL WIREWAYS AND AUXILIARY GUTTERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Cooper B-Line, Inc.

2. Hoffman; a Pentair company.

3. Wiremold.

B. Description: Sheet metal, complying with UL 870 and NEMA 250, Type 1 or Type 3R unless otherwise indicated, and sized according to NFPA 70.

1. Metal wireways installed outdoors shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2. Component Characteristics:

a. Required:

1) Provide metal wireway where indicated on drawings or as required.

http://www.specagent.com/LookUp/?uid=123456802967&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802968&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802969&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802970&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817881&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817882&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802971&mf=04&src=wd http://www.specagent.com/LookUp/?ulid=1749&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802922&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817848&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-6

2) The size shall be minimum 6”x6” unless otherwise noted. The finish shall be rust inhibiting primer coating with grey enamel finish.

3) Outdoor units shall be raintight with screw covers and furnished with full gaskets.

4) Provide with divider for power and data where required.

C. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings to match and mate with wireways as required for complete system.

D. Wireway Covers: Screw-cover type unless otherwise indicated.

2.4 BOXES, ENCLOSURES, AND CABINETS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Adalet.

2. Cooper Technologies Company; Cooper Crouse-Hinds.

3. EGS/Appleton Electric.

4. FSR Inc.

5. Hoffman; a Pentair company.

6. Hubbell Incorporated; Killark Division.

7. O-Z/Gedney; a brand of EGS Electrical Group.

8. RACO; a Hubbell Company.

9. Robroy Industries.

10. Thomas & Betts Corporation.

11. Wiremold / Legrand.

B. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets installed in wet locations shall be listed for use in wet locations.

C. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A.

1. Component Characteristics:

a. Required:

1) Outlet boxes and covers shall be galvanized pressed steel and plugged holes and shall be hot dipped galvanized or sherardized.

2) The minimum box size shall be 4” square by 2-1/8” deep.

3) Telephone and data outlets shall be a minimum of 4-11/16” square by 2-

1/8” deep.

4) Fire Alarm boxes shall be 4” square with plaster rings to suit type of device.

Special boxes shall be as specified in Division 28.

5) For boxes concealed in walls or ceiling, provide the solid gang, galvanized steel knockout type. Sectional boxes shall not be used.

6) Light fixture outlet boxes shall be equipped with fixture-supporting device, as required by the unit to be installed.

http://www.specagent.com/LookUp/?ulid=1754&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802935&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817853&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802936&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802938&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817854&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817855&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817856&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456817857&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802942&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802944&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456802945&mf=04&src=wd

90% SPECIFICATIONS 08/12/2025

NOT FOR CONSTRUCTION

RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 26 05 33-7

7) Switch Outlets: Use solid gang boxes for three or more switches for mounting behind a…