260533 FL - Raceway and Boxes for Electrical Systems.pdf

Federal Bureau of Prisons MCA, LLC

ELECTRICAL SERVICE UPGRADES BATON ROUGE, LOUISIANA

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 1 OF 15

TECHNICAL SPECIFICATIONS

SECTION 260533

RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Type EMT-A and Type EMT-SS raceways and elbows.

2. Type EMT-S raceways and elbows.

3. Type LMFC raceways

4. Type LNFC raceways

5. Type PVC raceways and fittings.

6. Fittings for conduit, tubing, and cable.

7. Threaded metal joint compound.

8. Solvent cements.

9. Strut-type channel raceways and fittings.

10. Wireways and auxiliary gutters.

11. Metallic outlet boxes, device boxes, rings, and covers.

12. Nonmetallic outlet boxes, device boxes, rings, and covers.

13. Termination boxes.

14. Cabinets, cutout boxes, junction boxes, pull boxes, and miscellaneous enclosures.

15. Cover plates for device boxes.

16. Hoods for outlet boxes.

B. Related Requirements:

1. Section 260543 "Underground Ducts and Raceways for Electrical Systems" for exterior duct banks, manholes, and underground utility construction.

1.2 ACTION SUBMITTALS

A. Product Data: For the following:

1. Wireways and auxiliary gutters.

2. Surface metal raceways.

3. Surface nonmetallic raceways.

4. Cabinets, cutout boxes, and miscellaneous enclosures.

B. Sustainable Design Submittals:

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 2 OF 15

C. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and attachment details. Show that floor boxes are located to avoid interferences and are structurally allowable. Indicate floor thickness where boxes are embedded in concrete floors and underfloor clearances where boxes are installed in raised floors.

D. Samples: For wireways, and for colors and textures specified, 12 inch long.

1.3 INFORMATIONAL SUBMITTALS

A. Manufacturers' Instructions:

1. For Type ERMC-S-PVC.

PART 2 - PRODUCTS

2.1 TYPE EMT-A AND TYPE EMT-SS RACEWAYS AND ELBOWS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 797A and UL Category Control Number FJMX.

B. Stainless Steel Electrical Metal Tubing (EMT-SS) and Elbows:

1. Material: Stainless steel.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

2.2 TYPE EMT-S RACEWAYS AND ELBOWS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 797 and UL Category Control Number FJMX.

B. Steel Electrical Metal Tubing (EMT-S) and Elbows:

1. Material: Steel.

2. Options:

a. Exterior Coating: Zinc.

b. Interior Coating: Zinc with organic top coating.

c. Minimum Trade Size: Metric designator 16 (trade size 1/2).

d. Colors: As indicated on Drawings.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 3 OF 15

2.3 TYPE LFMC RACEWAYS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 360 and UL Category Control Number DXHR.

B. Steel Liquidtight Flexible Metal Conduit (LFMC-S):

1. Material: Steel.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

C. Stainless Steel Liquidtight Flexible Metal Conduit (LFMC-SS):

1. Material: Stainless steel.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

2.4 TYPE LFNC RACEWAYS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 1660 and UL Category Control Number DXOQ.

B. Layered (Type A) Liquidtight Flexible Nonmetallic Conduit (LFNC-A):

1. Additional Criteria: Type A conduit with smooth seamless inner core and cover bonded together with one or more reinforcement layers between core and cover.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

c. Markings: 80 deg C dry.

C. Integral (Type B) Liquidtight Flexible Nonmetallic Conduit (LFNC-B):

1. Additional Criteria: Type B conduit with smooth inner surface with integral reinforcement within conduit wall.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

c. Markings: 80 deg C dry.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 4 OF 15

D. Corrugated (Type C) Liquidtight Flexible Nonmetallic Conduit (LFNC-C):

1. Additional Criteria: Type C conduit with corrugated internal and external surfaces without integral reinforcement within conduit wall.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Colors: As indicated on Drawings.

c. Markings: 80 deg C dry.

2.5 TYPE PVC RACEWAYS AND FITTINGS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 651 and UL Category Control Number DZYR.

B. Schedule 40 Rigid PVC Conduit (PVC-40) and Fittings:

1. Dimensional Specifications: Schedule 40.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Markings: For use with maximum 90 deg C wire.

C. Schedule 80 Rigid PVC Conduit (PVC-80) and Fittings:

1. Dimensional Specifications: Schedule 80.

2. Options:

a. Minimum Trade Size: Metric designator 16 (trade size 1/2).

b. Markings: For use with maximum 90 deg C wire.

2.6 FITTINGS FOR CONDUIT, TUBING, AND CABLE

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

B. Fittings for Type ERMC, Type IMC, Type PVC, Type EPEC, and Type RTRC Raceways:

1. General Characteristics: UL 514B and UL Category Control Number DWTT.

2. Options:

a. Material: Steel.

b. Coupling Method: Compression coupling.

c. Conduit Fittings for Hazardous (Classified) Locations: UL 1203.

d. Expansion and Deflection Fittings: UL 651 with flexible external bonding jumper.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 5 OF 15

C. Fittings for Type EMT Raceways:

1. General Characteristics: UL 514B and UL Category Control Number FKAV.

2. Options:

a. Material: Steel.

b. Coupling Method: Compression coupling.

c. Conduit Fittings for Hazardous (Classified) Locations: UL 1203.

d. Expansion and Deflection Fittings: UL 651 with flexible external bonding jumper.

D. Fittings for Type FMC Raceways:

1. General Characteristics: UL 514B and UL Category Control Number ILNR.

E. Fittings for Type LFMC and Type LFNC Raceways:

1. General Characteristics: UL 514B and UL Category Control Number DXAS.

2.7 ELECTRICALLY CONDUCTIVE CORROSION-RESISTANT COMPOUNDS FOR

THREADED CONDUIT

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 2419 and UL Category Control Number FOIZ.

2.8 SOLVENT CEMENTS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: As recommended by conduit manufacturer in accordance with

UL 514B and UL Category Control Number DWTT.

3. Sustainability Characteristics:

2.9 STRUT-TYPE CHANNEL RACEWAYS AND FITTINGS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 5B and UL Category Control Number RIUU.

B. Strut-Type Channel Raceways and Fittings with Metallic Covers:

1. Options:

a. Manufacturer's standard enamel finish in color selected by Architect/Engineer.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 6 OF 15

C. Strut-Type Channel Raceways and Fittings with Nonmetallic Covers:

1. Additional Characteristics: UL 94, V-0 requirements for self-extinguishing characteristics.

2. Options:

a. Provide texture and color selected by Architect from manufacturer's standard colors.

2.10 WIREWAYS AND AUXILIARY GUTTERS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 870 and UL Category Control Number ZOYX.

B. Metal Wireways and Auxiliary Gutters:

1. Additional Characteristics:

a. 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.

b. Finish: Manufacturer's standard enamel finish.

2. Options:

a. Degree of Protection: Type 1 unless otherwise indicated.

b. Wireway Covers: Hinged type unless otherwise indicated.

C. Nonmetallic Wireways and Auxiliary Gutters:

1. Additional Characteristics:

a. Fittings and Accessories: Couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings must match and mate with wireways as required for complete system.

b. PVC Solvents and Adhesives: As recommended by wireway manufacturer.

2. Options:

a. Material:

1) Fiberglass polyester, extruded and fabricated to required size and shape, without holes or knockouts. Cover must be gasketed with oil-resistant gasket material and fastened with captive screws treated for corrosion resistance.

Connections must be flanged and have stainless steel screws and oil-resistant gaskets.

2) PVC, extruded and fabricated to required size and shape, and having snap-on cover, mechanically coupled connections, and plastic fasteners.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 7 OF 15

2.11 METALLIC OUTLET BOXES, DEVICE BOXES, RINGS, AND COVERS

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 514A and UL Category Control Number QCIT.

B. Metallic Outlet Boxes:

1. Description: Box having pryout openings, knockouts, threaded entries, or hubs in either the sides of the back, or both, for entrance of conduit, conduit or cable fittings, or cables, with provisions for mounting outlet box cover, but without provisions for mounting wiring device directly to box.

2. Options:

a. Material: Sheet steel.

b. Sheet Metal Depth: Minimum 1.5 inch.

c. Cast-Metal Depth: Minimum 1.8 inch.

d. Luminaire Outlet Boxes and Covers: Nonadjustable, listed and labeled for attachment of luminaire weighing up to 50 lb.

e. Paddle Fan Outlet Boxes and Covers: Nonadjustable, designed for attachment of paddle fan weighing up to 70 lb.

C. Metallic Conduit Bodies:

1. Description: Means for providing access to interior of conduit or tubing system through one or more removable covers at junction or terminal point. In the United States, conduit bodies are listed in accordance with outlet box requirements.

D. Metallic Device Boxes:

1. Description: Box with provisions for mounting wiring device directly to box.

2. Options:

a. Material: Sheet steel.

b. Sheet Metal Depth: minimum 1.5 inch.

c. Cast-Metal Depth: minimum 1.8 inch.

E. Metallic Extension Rings:

1. Description: Ring intended to extend sides of outlet box or device box to increase box depth, volume, or both.

2.12 NONMETALLIC OUTLET BOXES, DEVICE BOXES, RINGS, AND COVERS

A. Performance Criteria:

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 8 OF 15

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 514C and UL Category Control Number QCMZ.

B. Nonmetallic Outlet Boxes:

1. Description: Box having pryout openings, knockouts, threaded entries, or hubs in either the sides or the back, or both, for entrance of conduit, conduit or cable fittings, or cables, with provisions for mounting outlet box cover, but without provisions for mounting wiring device directly to box.

C. Nonmetallic Conduit Bodies:

1. Description: Means for providing access to interior of conduit or tubing system through one or more removable covers at junction or terminal point. In the United States, conduit bodies are listed in accordance with outlet box requirements.

D. Nonmetallic Device Boxes:

1. Description: Box with provisions for mounting wiring device directly to box.

E. Nonmetallic Extension Rings:

1. Description: Ring intended to extend sides of outlet box or device box to increase box depth, volume, or both.

2.13 TERMINATION BOXES

A. Description: Enclosure for termination base consisting of lengths of bus bars, terminal strips, or terminal blocks with provision for wire connectors to accommodate incoming or outgoing conductors or both.

B. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics: UL 1773 and UL Category Control Number XCKT.

C. Termination Boxes and Termination Bases for Installation on Line Side of Service Equipment:

1. Additional Characteristics: Listed and labeled for installation on line side of service equipment.

D. Termination Boxes and Termination Bases for Installation on Load Side of Service Equipment:

1. Additional Characteristics: Listed and labeled for installation on load side of service equipment.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 9 OF 15

2.14 CABINETS, CUTOUT BOXES, JUNCTION BOXES, PULL BOXES, AND

MISCELLANEOUS ENCLOSURES

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics:

a. Non-Environmental Characteristics: UL 50.

b. Environmental Characteristics: UL 50E.

B. Indoor Sheet Metal Cabinets:

1. Description: Enclosure provided with frame, mat, or trim in which swinging door or doors are or can be hung.

2. Additional Characteristics: UL Category Control Number CYIV.

3. Options:

a. Degree of Protection: Type 1.

C. Indoor Sheet Metal Cutout Boxes:

1. Description: Enclosure that has swinging doors or covers secured directly to and telescoping with walls of enclosure.

2. Additional Characteristics: UL Category Control Number CYIV.

3. Options:

a. Degree of Protection: Type 1.

D. Indoor Sheet Metal Junction and Pull Boxes:

1. Description: Box with a blank cover that serves the purpose of joining different runs of raceway or cable.

2. Additional Characteristics: UL Category Control Number BGUZ.

3. Options:

a. Degree of Protection: Type 1.

E. Indoor Cast-Metal Junction and Pull Boxes:

1. Description: Box with a blank cover that serves the purpose of joining different runs of raceway or cable.

2. Additional Characteristics: UL Category Control Number BGUZ.

3. Options:

a. Degree of Protection: Type 1.

F. Indoor Polymeric Junction and Pull Boxes:

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 10 OF 15

1. Description: Box with a blank cover that serves the purpose of joining different runs of raceway or cable.

2. Additional Characteristics: UL Category Control Number BGUZ.

3. Options:

a. Degree of Protection: Type 1.

G. Indoor Sheet Metal Miscellaneous Enclosures:

1. Additional Characteristics: UL 1773 and UL Category Control Number XCKT.

2. Options:

a. Degree of Protection: Type 1.

2.15 COVER PLATES FOR DEVICES BOXES

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics:

a. Reference Standards: UL 514D and UL Category Control Numbers QCIT and

QCMZ.

b. Wallplate-Securing Screws: Metal with head color to match wallplate finish.

B. Metallic Cover Plates for Device Boxes:

1. Options:

a. Damp and Wet Locations: Listed, labeled, and marked for location and use.

Provide gaskets and accessories necessary for compliance with listing.

b. Wallplate Material: 0.032 inch thick Type 302/304 non-magnetic stainless steel with brushed finish.

C. Nonmetallic Cover Plates for Device Boxes:

1. Options:

a. Damp and Wet Locations: Listed, labeled, and marked for location and use.

Provide gaskets and accessories necessary for compliance with listing.

b. Wallplate Material: 0.060 inch thick high-impact thermoplastic (nylon) with smooth finish and color matching wiring device.

c. Color: Ivory.

D. Illuminating Cover Plates for Device Boxes:

1. Options:

a. Damp and Wet Locations: Listed, labeled, and marked for location and use.

Provide gaskets and accessories necessary for compliance with listing.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 11 OF 15

b. Wallplate Material: 0.060 inch thick high-impact thermoplastic (nylon) with smooth finish and color matching wiring device.

c. Color: Ivory.

2.16 HOODS FOR OUTLET BOXES

A. Performance Criteria:

1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and marked for intended location and use.

2. General Characteristics:

a. Reference Standards:

1) UL 514D and UL Category Control Numbers QCIT and QCMZ.

2) Receptacle, hood, cover plate, gaskets, and seals comply with UL 498

Supplement SA when mated with box or enclosure complying with

UL 514A, UL 514C, or UL 50E.

b. Mounts to box using fasteners different from wiring device.

B. Retractable or Reattachable Hoods for Outlet Boxes:

1. Options:

a. Provides clear, weatherproof, "while-in-use" cover.

C. Extra-Duty, While-in-Use Hoods for Outlet Boxes:

1. Additional Characteristics: Marked "Extra-Duty" in accordance with UL 514D.

2. Options:

a. Provides clear, weatherproof, "while-in-use" cover.

b. Manufacturer may combine nonmetallic device box with hood as extra-duty rated assembly.

PART 3 - EXECUTION

3.1 SELECTION OF RACEWAYS

A. Unless more stringent requirements are specified in Contract Documents or manufacturers' written instructions, comply with NFPA 70 for selection of raceways.

3.2 SELECTION OF BOXES AND ENCLOSURES

A. Unless more stringent requirements are specified in Contract Documents or manufacturers' written instructions, comply with NFPA 70 for selection of boxes and enclosures. Consult

Architect for resolution of conflicting requirements.

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 12 OF 15

B. Degree of Protection:

1. Indoors:

a. Type 1 unless otherwise indicated.

b. Damp or Dusty Locations: Type 12.

c. Surface Mounted in Kitchens and Other Locations Exposed to Oil or Coolants:

Type 12.

d. Flush Mounted in Kitchens and Other Locations Exposed to Oil or Coolants:

Type 12.

e. Locations Exposed to Airborne Dust, Lint, Fibers, or Flyings: Type 4.

f. Locations Exposed to Hosedown: Type 4.

g. Locations Exposed to Brief Submersion: Type 6.

h. Locations Exposed to Prolonged Submersion: Type 6P.

i. Locations Exposed to Corrosive Agents: Type 4X.

j. Locations Exposed to Spraying Oil or Coolants: Type 13.

C. Exposed Boxes Installed Less Than 2.5 m (8 ft) Above Floor:

1. Provide cast-metal boxes.

2. Provide exposed cover. Flat covers with angled mounting slots or knockouts are prohibited.

3.3 INSTALLATION OF RACEWAYS

A. Installation Standards:

1. Unless more stringent requirements are specified in Contract Documents or manufacturers' written instructions, comply with NFPA 70 for installation of raceways.

Consult Architect for resolution of conflicting requirements.

2. Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and number of floors.

3. Comply with requirements in Section 260529 "Hangers and Supports for Electrical

Systems" for hangers and supports.

4. Comply with NECA NEIS 101 for installation of steel raceways.

5. Comply with NECA NEIS 111 for installation of nonmetallic raceways.

6. Install raceways square to the enclosure and terminate at enclosures without hubs with locknuts on both sides of enclosure wall. Install locknuts hand tight, plus one-quarter turn more.

7. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install bushings on conduits up to metric designator 35 (trade size 1-

1/4) and insulated throat metal bushings on metric designator 41 (trade size 1-1/2) and larger conduits terminated with locknuts..

8. Raceway Terminations at Locations Subject to Moisture or Vibration:

a. Provide insulating bushings to protect conductors, including conductors smaller than No. 4 AWG..

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 13 OF 15

B. General Requirements for Installation of Raceways:

1. Complete raceway installation before starting conductor installation.

2. Provide stub-ups through floors with coupling threaded inside for plugs, set flush with finished floor. Plug coupling until conduit is extended above floor to final destination or a minimum of 2 ft above finished floor.

3. Install no more than equivalent of three 90-degree bends in conduit run except for control wiring conduits, for which no more than equivalent of two 90-degree fewer bends are permitted. Support within 12 inch of changes in direction.

4. Make bends in raceway using large-radius preformed ells except for parallel bends. Field bending must be in accordance with NFPA 70 minimum radii requirements. Provide only equipment specifically designed for material and size involved.

5. Conceal conduit within finished walls, ceilings, and floors unless otherwise indicated.

Install conduits parallel or perpendicular to building lines.

6. Support conduit within 12 inch of enclosures to which attached.

7. Install raceway sealing fittings at accessible locations in accordance with NFPA 70 and fill them with listed sealing compound. For concealed raceways, install fitting in flush steel box with blank cover plate having finish similar to that of adjacent plates or surfaces. Install raceway sealing fittings in accordance with NFPA 70.

8. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or boxes are between the seal and the following changes of environments. Seal interior of raceways at the following points:

a. Where conduits pass from warm to cold locations, such as boundaries of refrigerated spaces.

b. Where an underground service raceway enters a building or structure.

c. Conduit extending from interior to exterior of building.

d. Conduit extending into pressurized duct and equipment.

e. Conduit extending into pressurized zones that are automatically controlled to maintain different pressure set points.

f. Where otherwise required by NFPA 70.

9. Do not install raceways or electrical items on "explosion-relief" walls or rotating equipment.

10. Do not install conduits within 2 inch of the bottom side of a metal deck roof.

11. Keep raceways at least 6 inch away from parallel runs of flues and steam or hot-water pipes. Install horizontal raceway runs above water and steam piping.

12. Cut conduit perpendicular to the length. For conduits metric designator 53 (trade size 2) and larger, use roll cutter or a guide to make cut straight and perpendicular to the length.

Ream inside of conduit to remove burrs.

13. Install pull wires in empty raceways. Provide polypropylene or monofilament plastic line with not less than 200 lb tensile strength. Leave at least 12 inch of slack at both ends of pull wire. Cap underground raceways designated as spare above grade alongside raceways in use.

C. Requirements for Installation of Specific Raceway Types:

1. Types LFMC, and LFNC:

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 14 OF 15

a. Comply with NEMA RV 3. Provide a maximum of 36 inch of flexible conduit for, equipment subject to vibration, noise transmission, or movement; and for transformers and motors.

2. Types PVC:

a. Do not install Type PVC conduit where ambient temperature exceeds 122 deg F.

Conductor ratings must be limited to 75 deg C except where installed in a trench outside buildings with concrete encasement, where 90 deg C conductors are permitted.

b. Comply with manufacturer's written instructions for solvent welding and fittings.

D. Raceway Fittings: Install fittings in accordance with NEMA FB 2.10 guidelines.

1. PVC: Provide only fittings listed for use with this type of conduit. Patch and seal joints, nicks, and scrapes in PVC coating after installing conduits and fittings. Provide sealant recommended by fitting manufacturer and apply in thickness and number of coats recommended by manufacturer.

2. EMT: Provide setscrew, fittings. Comply with NEMA FB 2.10.

3. Flexible Conduit: Provide only fittings listed for use with flexible conduit type. Comply with NEMA FB 2.20.

3.4 INSTALLATION OF BOXES AND ENCLOSURES

A. Provide boxes in wiring and raceway systems wherever required for pulling of wires, making connections, and mounting of devices or fixtures.

B. Horizontally separate boxes mounted on opposite sides of walls so they are not in the same vertical channel.

C. Support boxes of three gangs or more from more than one side by spanning two framing members or mounting on brackets specifically designed for purpose.

D. Fasten junction and pull boxes to, or support from, building structure. Do not support boxes by conduits.

E. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in the locknut area prior to assembling conduit to enclosure to ensure a continuous ground path.

3.5 FIRESTOPPING

A. Install firestopping at penetrations of fire-rated floor and wall assemblies. Comply with requirements in Section 078413 "Penetration Firestopping."

Federal Bureau of Prisons MCA, LLC

UNICOR, FPI March 20, 2026

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS, PAGE 15 OF 15

3.6 PROTECTION

A. Protect coatings, finishes, and cabinets from damage and deterioration.

1. Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer.

2. Repair damage to PVC coatings or paint finishes with matching touchup coating recommended by manufacturer.

3.7 CLEANING

A. Boxes: Remove construction dust and debris from device boxes, outlet boxes, and floor-mounted enclosures before installing wallplates, covers, and hoods.

END OF SECTION 260533