What is the max watts for a 15 amp circuit and #12 wire? Guestimating if everything was on, I would be using 2145 watts. But I would not normally do this. Allowing for vacuuming.

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Originally Posted by almost handy

What is the max watts for a 15 amp circuit and #12 wire? Guestimating if everything was on, I would be using 2145 watts. But I would not normally do this. Allowing for vacuuming.

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1800 va, 1440 va (3 hour continuous) for 15 amp, 14 awg. For a 2145va load, a 12 awg 20 amp branch circuit is needed. Its max is 2400va, or 1920 va continuous.