Posted: 10/18/2011 7:00:23 PM EDT
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Howdy guys,
I have a air compressor with a square D pressure switch mounted on top. I have 220 wired from the breaker box going to the switch. How do I wire the switch? Also how do I wire the motor. There is an L1 and L2 terminal. Here is the plug that gets attached to the box on the wall. G= Ground B= Black W= White 
Here is the pressure switch on the compressor. This is how I have it wired. BI= Black in BO= Black out (to motor) WI= White in WO= White out (to motor) 
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Quoted:
Thats right but you need to make sure that your motor is wired for 220 as some compressors have a duel voltage motor and will run at either 120 or 220 volts. It was previously wired for 220 so I know it runs off of it. Which colored wire do I hook up to the L1 and L2 on the motor? White to L1 & black to L2 or reversed? |