The Myth: Insulation Stops Heat
It seems logical: more insulation equals more safety, right? Not always. When it comes to your home’s electrical wiring, burying cables in too much insulation can actually create a fire risk, not prevent one.
Electrical wires produce heat as they carry current. They’re designed to dissipate this heat into the open air, almost like they need to “breathe” to stay cool. If you bundle wires together and then pack them deep into dense insulation, especially something like spray foam, that heat gets trapped. It has nowhere to go. The wires overheat, a condition electricians call “derating,” and that’s not just inefficient – it’s a serious safety concern for your home.
So next time you’re in the attic or having insulation work done, remember to give those electrical cables some room. Don’t let them get completely encased. A little space around them can prevent a big problem down the road.
If you have questions or need help with electrical work in the Huntsville area, visit us at huntsvillewireandhome.com or give us a call. We’re here to help.
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