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Code Q&A

Apr 8, 2005 4:12 PM, By Mike Holt

Q. What’s the maximum number of circuit breakers permitted to be installed in a panel?

A. The maximum number of circuit breakers permitted in a panelboard is limited by the instructions posted inside the panelboard [110.3(B)]. In addition, 408.15 specifies that a lighting and appliance panelboard, as defined in 408.14(A), isn’t permitted to have more than 42 overcurrent devices installed in any one cabinet.

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