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Can you tell me how to determine the right size breaker for a central air unit?

asked by matt25 (18)

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answers

Figure 1. 5 hp per ton, so a 3 ton unit would be 4. 5 hp times 746 watts in a hp equals 3357 divided by line voltage 220 equals 15. 26. Include a safety factor, and a 20 amp breaker would do it.

reply
posted by kipcat (1900)
6 votes

It is very simple to determine the right size breaker for a central unit because it is written on the manufacturer's tag on the unit itself.

reply
posted by worker89 (90)
5 votes

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