• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

Schedule 40 Plumbing Pipe For Conduit - NEC Compliant?

Only when if it were deleted, the resulting installation is NEC compliant. In other words, it may be used as a sleeve for convenience of installation of a Chapter 3 wiring method.

Cheers, Wayne
 
wwhitney said:
Only when if it were deleted, the resulting installation is NEC compliant. In other words, it may be used as a sleeve for convenience of installation of a Chapter 3 wiring method.

Cheers, Wayne
Click to expand...
Could you please expand on that and clarify?

110.8 Wiring Methods.
Only wiring methods recognized as suitable are included in this Code. The recognized methods of wiring shall be permitted to be installed in any type of building, occupancy, or premises wiring system, except as otherwise provided in this Code.

352.6 Listing Requirements.
PVC conduit, factory elbows, and associated fittings shall be listed.

For plumbing PVC to be used as a sleeve through a foundation, for example, for the sole purpose of protecting the listed electrical PVC, I agree.
 
jar546 said:
For plumbing PVC to be used as a sleeve through a foundation, for example, for the sole purpose of protecting the listed electrical PVC, I agree.
Click to expand...
Sure. Or you could pull a cable wiring method through the unlisted PVC sleeve.

Basically individual conductors on their own do not constitute a Chapter 3 wiring method. The conductors either need to be in a raceway wiring method, or part of a cable assembly. The presence of an unlisted PVC sleeve does not contribute towards satisfying one of those requirements.

So if I bury some plumbing-type PVC between two buildings, I can't pull TWHN-2 conductors through it, the plumbing-type PVC is not an electrical raceway. But I could pull a direct bury cable wiring method through it, that's a complete wiring method on its own.

Cheers, Wayne
 
wwhitney said:
Sure. Or you could pull a cable wiring method through the unlisted PVC sleeve.

Basically individual conductors on their own do not constitute a Chapter 3 wiring method. The conductors either need to be in a raceway wiring method, or part of a cable assembly. The presence of an unlisted PVC sleeve does not contribute towards satisfying one of those requirements.

So if I bury some plumbing-type PVC between two buildings, I can't pull TWHN-2 conductors through it, the plumbing-type PVC is not an electrical raceway. But I could pull a direct bury cable wiring method through it, that's a complete wiring method on its own.

Cheers, Wayne
Click to expand...
I can buy that. Makes logical sense.
 
You must log in or register to reply here.
Back
Top