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Old 05-15-2013, 05:50 PM   #16
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Can you mix 20 and 15-20 circuit breakers in same electrical box?


The tandems allow two circuits to fit in the space of one breaker slot.

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Old 05-15-2013, 06:01 PM   #17
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Can you mix 20 and 15-20 circuit breakers in same electrical box?


The "quad" allows one to add a 240V circuit to a full panel without losing two 120V circuits in the process. Or gain two 120V circuits from the space occupied by a 240V circuit.

Separate handle tied tandems can serve a MWBC, but typically not a 240V circuit because they would likely be independent trip, not common trip.

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Last edited by tylernt; 05-15-2013 at 06:03 PM.
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