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For 1 inch through 2 inch ENT, it should not be installed in

a 2  4 inch studded wall since it will not meet minimum

code requirements. Our suggestion is that 1 inch through

2 inch ENT be installed in a 2  6 inch studded wall only.

This can be drilled in the center of a 2  6 inch stud.

4. IS THERE A CONCERN WITH THE INSTALLATION

OF ENT PARALLEL TO STUDS OR JOISTS? WHAT

IS THE SUPPORT SPACING?

No. As long as the ENT is not closer than 1

/4 inches from

the edge where nails or screws are likely to penetrate

(see Section 300.4(D), Section 10 of this manual).

b. For supporting such runs, use as Carlon Snap Straps,

nonmetallic clamps for

/2 inch through 2 inch sizes,

or nail straps for

/2 inch through 1 inch sizes. Supports

must be 3 feet from each termination in a box or panel

and 3 feet on center thereafter (see NEC Section

362.30, Section 10 of this manual.)

5. WHAT IS 1

4 INCH THROUGH 2 INCH ENT

USED FOR?

The larger sizes of ENT are intended to be used for system

feeders, feeders and branch circuit home runs. See

Sections 4, 5 and 6 of this manual for more applications

of the larger sizes.

6. WHAT IF THE STUD JOIST IS NOTCHED, NOT

DRILLED. HOW IS THE ENT PROTECTED?

Check the job specifications first, make sure they allow

notching. After notching the wood building member and

installing the ENT, protect it with a

/16 inch thick steel

plate to protect the ENT from nails or screws (ref. NEC

Section 300.4(A)(2), see Section 10 of this manual.)

7. DO I USE THE HOLES ALREADY MADE IN THE

METAL STUDS FOR INSTALLING ENT?

Yes. When installing ENT through holes in metal studs, it

must be pulled briskly for ease of installation, otherwise

the corrugations in the ENT will have a tendency to hang-

up. You should be careful not to pull a stud out of position.

For a short length of ENT, it can be passed through the

opening at a steep angle through the steel stud to avoid

a hang-up.