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#15143 - 10/08/02 12:53 PM circuit breaker
mountainman Offline
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Registered: 01/29/02
Posts: 54
Loc: Richmond Va. U.S.A.
Why does the code limit only 42 overcurrent devices per panel?
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#15144 - 10/08/02 01:29 PM Re: circuit breaker
Tom Offline
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Registered: 01/01/01
Posts: 1044
Loc: Shinnston, WV USA
I remember reading an article some years ago that addressed this. Seems at one time there was no limit and a very large fusebox at a hotel caught fire. This was in the days of rubber covered wire & this produced quite a bit of smoke which resulted in some deaths. In order to limit the available fuel, it was decided to limit the number of circuits.

You should also see 90.8(B)

Tom
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