Carlon Concrete Encasement Guidelines User Manual download pdf

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1.1 Electrical Nonmetallic Tubing (ENT), is designed to replace EMT, flexible metal conduit or other

raceway or cable systems, for installation in accordance with Article 331 of the National Electrical

Code, other applicable sections of the Code, and local codes.

1.2 Any ENT used shall meet the requirements of UL Standard UL 1653 and shall be listed by

Underwriters Laboratories, Inc., as suitable for its intended purpose.

1.3 ENT shall be recognized by a CABO National Evaluation Report for use in 1-hour and 2-hour rated

construction.

1.4 Penetration of fire rated walls, floors or ceilings shall use classified Through-Penetration Firestop

Systems described in the current Underwriters Laboratories Fire Resistance Directory.

1.5 Fittings and outlet boxes shall be designed for use with ENT and listed by Underwriters Laboratories.

All fittings, boxes and accessories shall be from one manufacturer.

1.6 Only Carlon ENT Blue cement recommended specifically for use with ENT shall be used.

1.7 Unless indicated differently on drawings, ENT systems shall be color coded: BLUE for branch and

feeder circuit wiring, YELLOW for communications, and RED for fire alarm and emergency systems.

1.8 ENT, fittings, and accessories shall be manufactured by Carlon.

Carlon new quick connect one piece fittings are approved for concrete-tight installations. For sizes larger

than 1" the use of standard Carlon

solvent weld fittings with the proper ENT cement is recommended.

1. Cut ENT square and cleanly.

2. Insert end into fitting, making sure two (2) full

corrugations are snapped into fitting beyond

flexible tabs (2 clicks).

3. ENT should be tied to rebar at 2-3 foot intervals

to prevent flotation. Keep ENT straight. Small

deflections over a long run may accumulate

significant degrees of bend which will affect

conductor installation. Suitable materials

include wire, tie wraps, and tape.

4. When using UL solvent weld fittings for

concrete tight performance:

A. Do not use chemical primer or

cleaner.

B. Apply a light, uniform coat of

cement labeled for use with ENT

on the coupling and ENT.

C. Do not use a dauber.

D. Brush excess cement out of ENT

grooves.

E. Promptly insert ENT

into fitting while

cement is wet, until

the stop is reached,

and give a quarter

turn.

F. Do not disturb until

joint is set.

Specifications for ENT (Electrical Nonmetallic Tubing)

Concrete Encasement Guidelines

Gross Automation (877) 268-3700 · www.carlonsales.com · [email protected]

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www.carlonsales.com 251.1 Electrical Nonmetallic Tubing (ENT), is designed to replace EMT, flexible metal conduit or otherraceway or cable systems, fo

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Carlon Concrete Encasement Guidelines User Manual

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