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Main Breaker failure?

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norcal

Senior Member
MAC702 said:
I don't know if it's called a "4-pole" breaker or not, but what he is describing is a typical 200A main breaker in some ITE panels. It's the size of four spaces, and in a backfeed configuration, with 2-pair of connections.
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ITE was the first with that design breaker but GE, & Cutler-Hammer also used that style.
 
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