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RE: That's not it

Posted by josh358 (P) on August 4, 2021 at 12:34:51

In Reply to: RE: That's not it posted by Roger Gustavsson on August 4, 2021 at 09:32:26:

The ceiling in the basement, or in the room? They're both pretty low. This house was built in 1695 so the ceilings weren't very high to begin with, and stuff has been added since, making them even lower.

Rats nest, yes, but keep in mind that these breaker panels were installed something like 80 years ago. The house has been rewired since -- most of that cable is new, but there are still some old cables, and these can come from different directions. And it's an incredibly difficult house the wire, the hardest that the electricians have ever worked on.

That said, everything there is according to the national electrical code, e.g., the cables run along and through the beams with proper support.

In general here, houses of fewer than three stories can be wired with plastic NM cable. Larger houses/apartment buildings must be wired with armored cable or conduit (tubes). The cable must generally run within the wall in a finished area, but can be exposed in a basement like this one or an attic crawl space. If the breaker panel were located in a finished area of the house it would be flush and all of the cables would be hidden.

You'd think that metal conduit would reduce fire risk over plastic cable, but it doesn't -- the metal doesn't burn, but it gets as hot as the plastic does and sets structure on fire. Each has its advantages, depending.

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