Thanks Allan,<div>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.<span></span><br><br>On Sunday, October 30, 2016, Allan Sindelar <<a href="mailto:allan@sindelarsolar.com">allan@sindelarsolar.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="background-color:rgb(255,255,255);color:rgb(0,0,0)" bgcolor="#FFFFFF" text="#000000">
Adam,<br>
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.<br>
Allan<br>
<br>
<div>
<div>
<p class="MsoNormal"><b>Allan Sindelar</b><br>
<span style="font-size:10.0pt"><a href="javascript:_e(%7B%7D,'cvml','allan@sindelarsolar.com');" target="_blank">allan@sindelarsolar.com</a></span><br>
<span style="font-size:10.0pt">NABCEP Certified PV
Installation Professional<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder (Retired), <span>Positive
Energy,
Inc.</span><br>
<b>505 780-2738 cell</b><br>
<br>
<b><u></u><u></u></b></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
<div>On 10/29/2016 6:50 PM, AE Solar wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Wrenches,
<div>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.
</div>
<div>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.</div>
<div>Adam</div>
</div>
<br>
<fieldset></fieldset>
<br>
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</blockquote></div><br><br>-- <br><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Adam Katzman<br>Autonomous Energies<br>PO Box 1245</div><div dir="ltr">Kingston, NY 12402<br><a href="http://www.autonomousenergies.com" target="_blank">www.autonomousenergies.com</a><br>(518) 567-1468<br><br></div></div></div></div></div><br>