Hello, I’m back with another question. Everything a read is telling me yes I can, but it really does not feel right so I’m gonna ask here for good measure. Can I run electrical wire through fiberglass insulation?
In several rooms upstairs the wire comes out of the center of the ceiling then goes across to the window where a fluorescent tube light is installed. Below all that is a drop ceiling tile with insulation packed on top of it. I want to take the fluorescent light out and put a normal light back in which is easy enough. My concern is running the wiring through the insulation. Everything says running it through insulated walls is fine and the insulation itself says it’s non-combustible. But can someone confirm that I’m reading the right stuff?
There’s a gap between two pieces of insulation that I want to run the wire between. Picture attached. Not sure how old the insulation is if that is important.
If everything you have read is saying that it is fine, then why does it not feel right for you? Looking around I do get the same impression, it is non-combustible so there is not really a concern there. Basically from what I gather as long as you use the proper wire for use in walls/isolation, leave enough space and generally take good practices in account like using conduit where needed you should be good to go.
I am not an electrician though and certainly not aware of your local code and regulations.
Talking about electricians, if you are worried about doing it not right, why not hire one to do it for you?
I’ve been through 6 electricians and 3 general contractors. Probably more but I can’t keep those numbers straight. They all show up to give a quote then never actually do the work. I’m tired of it.
That being said, the insulation just feels flammable to me. It’s clearly marked otherwise but the paper backing and stuff just made me want to double check
#14 Romex on a 15A breaker is simply not going to get meaningfully hot, even under worst-case scenario loads and even fully insulated in something entirely flammable. If you’re very nervous, size it up to #12 – it will cost slightly more but be even more totally safe. Overbuilding is (should be) the DIYer’s creed.
12/2 is what I bought for the basement lights I’m working on. Everything I read said that was the appropriate wire to use so I never even co sidered #14