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ByDave Rongey © Ask the Electrician 2017 Author, Licensed Electrical Contractor
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220 Volt Electrical Circuit for an Air Compressor

I read that 20 amp 240v outlets do not have a natural wire both are hot. Is this true and do I need a double pole 20 Amp 240v breaker for the 10-2 wire?

220 Volt Electrical Circuit for an Air Compressor
Background: Dan, a Homeowner from Avondale, PA
Question: I have a Jun Air 12-20 compressor rated 198-242V – 2.85 amps. There are two motors on this compressor. The plug is a 1 1/8 inch diameter 20 amp 240V style.

I ran 10-2 for wire and I want to put in a breaker just for this compressor.

My question is I read that 20 amp 240v outlets do not have a natural wire both are hot. Is this true and do I need a double pole 20 Amp 240v breaker for the 10-2 wire?

Additional Comments: nice!

Dave’s Reply:
Thanks for your electrical question Dan. There is no neutral wire required for 240 volt air compressor motors. The circuit breaker will need to be 2-pole 240 volt sized according to the specifications of the manufacturer.

The Following links will assist you with your electrical question:

220 Volt Wiring Diagram

Circuit Breakers
House Wiring Circuits and Circuit Breakers

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