Caulk for electrical cables


Old 05-11-19, 12:59 PM
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Caulk for electrical cables

Just had ac installed and there are some electrical wires going into the attic in some returns. The gaps are small but I want to seal them anyway. What caulk should I use? I want to do it correctly and safely.
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Old 05-11-19, 01:26 PM
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There is a product called Duct Seal made by Ideal, Gardner-Bender, etc. that's UL listed for this application. It's also available in most big box stores.
Old 05-11-19, 02:27 PM
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Electrical putty is also available in the BB stores!
Old 05-11-19, 03:18 PM
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Will silicone caulk harm electrical cables

Will plain silicone caulk harm electrical cables? How about the stuff they used to seal the duct work.
Old 05-11-19, 03:36 PM
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Penetrations should be sealed according to fire code. So use fire rated silicone, such as:

Other products may also work, but they would have to be fire rated.

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