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Installing a 100 amp breaker in a 200 amp panel

Mike Lamb

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You'll need to ask your local (Challenger) electrical wholesaler if a 100 will fit in place of a 200 in that particular model of panel.  I think there's a decent chance of finding a 175 or less that will work. 1/0 is ok on a 175 A service.

I'd do a load analysis first to find out just how big a service you'll need.  The NEC has instructions for doing that.  That's more up a sparky's alley than an HI's though.

Edited by Marc
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