Thread: wiring up a compressor.
View Single Post
  #2 (permalink)  
Old 09-23-2006, 03:13 PM
Three Peaks Three Peaks is offline
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2005
Location: Hillsboro, OR
Cobra Make, Engine: Scratch built CSX style frame, Carbon fiber body, 393 Stroker, T-bird IRS, T5
Posts: 1,623
Not Ranked     
Default
With a 3 phase compressor, you will require a magnetic starter with an on/off switch . The pressure switch control wires go in series between the switch and the hot side of the coil power so it will operate when the switch is in the on position and won't come on automatically when it is supposed to be turned off.
If you need more help, e-mail me at bsfx(at)aol.com and I'll talk you through it. I'm an electrician/electrical contractor and I specialize in commercial/industrial work.

BTW, it is very dangerous to run your compressor without the pressure switch hooked up. The sound you are hearing isn't the switch, it is the blowoff valve letting off the excess pressure when it gets to the limit. If that fails you can damage the compressor tank or compressor head or get seriously injured.

Bob
Reply With Quote