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Old 03-05-12, 11:47 AM   #46
MN Renovator
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Isn't putting a non fire-rated foam into an electrical box a potentially hazardous thing to do? Could be against code meaning your insurance company would fault you and not cover a house fire. I was going to make a thread about what the best way to seal my lighting fixture junction boxes where there are two knockouts punched where one is used, what you are doing is pretty much the same idea. I was thinking along the lines of liquid electrical tape would be the safest. I noticed my foam switch/outlet gasket material has UL marks on it. I would hate to see a house burn down from some arcing in the electrical box that might otherwise trip a breaker and normally be isolated in the box become a fire. Have you put any thought into that?
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