House had an obviously unprofessional rewiring job, in which some NM wires in the basement were run under and stapled to the bottom of the ceiling joists, which to my understanding does not conform to code. However, the ceiling was rather high, evidently 8 feet, as I could not easily touch the wires reaching up without getting on my toes; and as such they’re not easily subject to damage.
My question is whether or not there is some sort of ceiling height limitation to the requirement that such wiring be run through the joists or protected by a raceway or conduit.
Even at the 8ft height these wires were run the potential for accidental damage is minimal, unless perhaps one has pet monkeys, but I could not see any qualifiers based on ceiling height in any of the code references I could find.
Yep, I did note that a finished ceiling would protect the wiring properly.
My question is strictly if the code does not apply for a ceiling above a certain height. Logically, if a ceiling is 15ft high, for example, nobody will be able to reach the wires without a ladder, and the reason for the code does not apply. This is my point of curiosity.
But then, codes are not necessarily logical. I’ve always considered it silly for so many condos to have an exterior main disconnect, but none in the distribution panel inside the unit.
There is no height exception I’m aware off… only exception is the wire’s gauage: NEC 2020 334.15[C] only cables #6-2 or #8-3, or larger, are allowed to be secured directly to unfinished crawl/basement joists.
What code is “The code” that you are referring to? There are problems with asking code questions. First, you didn’t mention which code. You referred what “The city” will require but you didn’t mention which city the building is in. You didn’t mention when the house was built or any relevant information such as how many stories it is.
Like the old saying goes, “A little knowledge is dangerous”.