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The unit in question asks for 208/230 V ~ 60Hz, 1Ph as the power source. I have a 30 amp circuit breaker that used to be for a water boiler. It's a 30A 2 Pole 120/240V Type Q Breaker

The part I'm confused by is the 1 Phase, requirement on the unit, while the breaker is a two pole breaker.

Does that mean I have to have an electrician install a different type breaker or will the AC people be able to use the existing one?

Thanks.

AC UNIT enter image description here

BREAKER enter image description here

Amir
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1 Answers1

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USA/Canada power (for most residences) is single phase. The two-pole breaker accesses 240V (or sometimes 208V) single phase between the two hots. A one-pole breaker accesses 120V single phase between one hot and Neutral, which is grounded. Thus, it is sometimes also correctly referred to as "split-phase" since the neutral is connected to a center tap on the transformer that "splits" the voltage between the two hots.

Since the breaker you have is at least 25A and not more than 40A, your AC people should be able to use it as is.

Ecnerwal
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