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What Wire Gauge Required for +12V Trailer Power Circuit to Run A/C Unit  

Question:

I have 10 gauge wire and only 1 a/c unit should that be large enough and its a 20 amp breaker

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Expert Reply:

We recommend 10-gauge wire like # 10-1-1 for any 12V trailer power wiring. This wire gauge can be used with circuit breakers up to 40-amps, so it will be fine for use with your 20-amp breaker, like # PK54520. You'll want to check the power draw for your A/C unit to ensure it does not exceed the capacity of the circuit breaker you're installing.

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Adam R

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