Originally Posted By: Greg Fretwell
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When I was inspecting I figured if I could get my finger between the cables without moving them they were not bundled. That was based on the distance between the clips on those standoffs they use on furred walls. I haven’t seen anything official. The issue is whether they can “breathe” and not build up heat.
If I was really worried about it I would start worrying about the cables coming out of the top of a panel and going up the wall in a chase or single core of drywall. The energy code mandates that this chase CAN’T breathe.
The entrance into the attic must be sealed against air infiltration. This is not to be confused with firestopping.
Volume does not come into derating. 4 #14s
in a 6" pipe gets derated the same as if it was in 1/2".
These are the things that start fights in IAEI meetings