Plastic Boxes in Hot Attic?

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Old 02-06-06, 07:54 PM
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Plastic Boxes in Hot Attic?

At the risk of starting another plastic/metal debate, I have a simple question. I'm replacing wiring and receptacles in the finished attic now, and I picked up some large plastic boxes because they are a little faster. Now, I'm wondering about this because it can get very hot up there in the summer--particularly if you aren't running any A/C up there. Will the heat cause the plastic boxes to soften and become deformed? Would it be better to use metal or the sturdier plastic boxes?
 
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Old 02-06-06, 08:16 PM
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Originally Posted by Timinindy
Will the heat cause the plastic boxes to soften and become deformed?
No, it doesn't get that hot.
But considering the ambient temperature, you should use #12 wire and limit circuits to 15A.



> Would it be better to use metal ... boxes?
Of course!
 
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Old 02-06-06, 08:27 PM
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Originally Posted by Timinindy
Will the heat cause the plastic boxes to soften and become deformed?
No.




Originally Posted by Timinindy
Would it be better to use metal or the sturdier plastic boxes?
Unless I need to bring a metallic whip or conduit out of a box, with NM I typically use NM boxes. I've NEVER(!!!) had a problem because of it and don't expect to ever have one.

Neither is safer.
And by all means neither is unsafe.

It's your choice though.
 
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