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Does a subpanel require a main breaker by code?
Sunday, February 2, 2020
The means of disconnection for a subpanel is provided by a breaker serving it in the service (main) panel, so an additional breaker at the subpanel is not necessary. But you can put a main breaker at a subpanel if you want. The National Electrical Code only requires a main disconnect for a subpanel when located in a separate building (NEC 225.30 and 225.31).
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