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Old 06-07-2012, 04:46 PM   #1
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conduit: plastic or steel?

I'm putting electric in the attic. I am running the wires on the outside of the wall inside the room. According to Pa. law, does it have to be steel or can I use plastic?


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Old 06-11-2012, 06:47 AM   #2
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Call the local inspector and ask. You'll get the right answer.


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Old 06-11-2012, 07:41 AM   #3
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In general, PVC conduit is not a good choice for hot locations. It tends to sag.

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Old 06-11-2012, 08:42 AM   #4
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If you run pvc strap it as often as you can in the attic. Something like every 2 feet. Otherwise it will warp really bad due to constant temperature changes. I would run emt if it were me
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Old 06-11-2012, 09:51 AM   #5
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If you are running conduit on top of joists perpendicular to them its still a good idea to protect the conduit from someone stepping on it. We must use EMT in IL and all the conduit runs in my attic have 2x4s along side the conduit. I presume for mechanical protection. Not sure if it is code or just good practice.
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