[RE-wrenches] Conduit in a slab

AE Solar autonomousenergies at gmail.com
Sun Oct 30 04:25:14 PDT 2016


Thanks Allan,
I agree the PVC is better for corrosion, but if I sweep up with PVC I will
be running DC in PVC inside the house for however many inches it takes to
convert to EMT...which is a part I'm not sure about.

On Sunday, October 30, 2016, Allan Sindelar <allan at sindelarsolar.com> wrote:

> Adam,
> Over time earth can be corrosive to metal, which is why good practice here
> is to use PVC below grade and transition to EMT once the conduit is exposed
> above grade. I suspect that concrete would have similar effects. In New
> Mexico, state Code requires Schedule 80 if PVC is used above grade, I
> suspect primarily because of the intensity of our high-elevation sun, so by
> that logic you'd use a Sch. 80 90 sweep to exit the slab, then transition.
> Allan
>
> *Allan Sindelar*
> allan at sindelarsolar.com
> <javascript:_e(%7B%7D,'cvml','allan at sindelarsolar.com');>
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> *505 780-2738 cell*
>
>
> On 10/29/2016 6:50 PM, AE Solar wrote:
>
> Wrenches,
> I have a project where the DC run is going through the wall system of the
> house, down through the slab, out the building underground and into another
> building. My preference would be to run PVC in the slab and then stub out
> of it with a metal 90.
> I'm unclear if that is allowed. Is conduit in the slab considered to be
> inside the house and therefore should be metal? Thanks for any thoughts.
> Adam
>
>
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-- 
Adam Katzman
Autonomous Energies
PO Box 1245
Kingston, NY 12402
www.autonomousenergies.com
(518) 567-1468
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