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13. CAN ENT BE “PRE-WIRED” PRIOR TO
INSTALLATION?
Yes, per Section 300.18(A) and 362.10(8),
1
/2 inch
through 1 inch ENT, as a listed manufactured pre-wired
assembly, is now recognized by the NEC as an acceptable
wiring method. Pre-wired ENT is required to be
assembled by the listed manufacturer and cannot be field
assembled. A special cutting tool is required to be used to
prevent damage to the conductors during the cutting of
the assembly.
14. CAN ENT BE PLACED ON THE GROUND
BEFORE POURING CONCRETE?
Yes, per Section 362.10(6), the NEC allows ENT to be
placed directly on sand or approved screenings prior to
“embedding” the ENT in concrete.
15. WILL THE NEC ALLOW ENT TO BE USED IN
RV’S, TRAILERS AND PARKS?
Yes, per Section 551.47(A), ENT is now recognized by
the NEC as an acceptable wiring method when passing
through the centers of the wide side of 2 inch by 4 inch
wood studs for Recreational Vehicles, Recreational Vehicle
Parks and Park Trailers.