What size breaker?


Old 01-27-18, 12:16 PM
YesHaveSome's Avatar
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What size breaker?

I am installing a mini split and nowhere in the manual does it state what size breaker is required. It's an 18,000 unit and based on other research I have done this usually requires a 30A breaker. Here is the nameplate on the unit:


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Old 01-27-18, 02:14 PM
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Nameplate states max fuse or circuit breaker is 20 amp. You must follow the nameplate.
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Old 01-27-18, 04:52 PM
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You can wire that with#14 or larger wire.
Old 01-27-18, 04:54 PM
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I would recommend using #12 especially if the run is 50' or better.
Old 01-27-18, 07:48 PM
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mini splits usually are 20A with exception of larger units.
Whole house AC or heat pump usually are 30A, some smaller ones are 20A as well.
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