HerHusband wrote:


However, you can insulate around NM wire, whereas you're not supposed to
insulate around knob and tube wiring. I think it's because the insulation
doesn't hold up to the increased heat build-up.


The current Romex (NM-B) has 90 degree C insulation. One reason is
because Romex was being put in insulation.

Old K&T has 60 degree insulation. But so did Romex until relatively
recently. And with the old Romex 2 conductors, and their generated heat,
are run immediately adjacent.

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