DanZ said:On a block wall. :roll: Okay, I get what you're saying, it's pretty much impossible to do it. I think the issue the code is after is leaving the panel open with an easily combustible material in close proximity, like a painting or clothing. However, that's not what the code says. :roll: I've never tried to ignite the paper filler in NM. That sounds like a challenge! :grin:
Why would you leave the panel open?
Igniting the paper from NM is pretty easy... it's just like the kraft paper on the fiberglass insulation.
Hmmm... I wonder if that code section got added right after The Towering Inferno came out?