I am trying to connect this compressor to power. My boss says he hooked it up to 110 before he bought it and the fact that it's 110 is why he bought it. I call . I see some pretty good size wires and the motor plate says 230. Anyway.. I have a pretty good idea how it needs to be wired but thought I would see if anyone here knows for sure what some of these things are. There is a oil pressure switch I didn't get a pic of.
That's the largest 120v compressor I ever seen, probably need a dedicated 60A circuit with #8 wire to run it from 120v... That's IF it has a multi-voltage motor and could be wired for such use ... You're boss may well have started it with no load on 120v, but it'd never restart once pressure was up ... What's the HP rating??? Assuming you are using three wire hookup the black & white will connect to line with the motor terminals connecting to L1 & L2 on the motor it's self... The ground will connect to a lug marked as such on on the switch where motor and line terminals are... BTW you need to get rid of all that rust on those terminals or you'll likely burn up the switch, if not the motor...
Gene, take a picture of the 220 receptacle at the wall. Need to see what shape the holes are, and how many prongs. You will need to buy the plug and wire from hardware store to match that, and I can send you a picture of how mine is wired up.
Gene if the motor nameplate says it is 220 then you have to hook it up 220, there should be a wiring diagram on the bottom side of the cover that wiring hooks to. Like Krazy Comet says L1 and L2 are your power wires. I just googled the wiring diagram and there are lots on the internet
That compressor looks awfully large to run on reg 115v. I don't think it was intended to work on that pwr input.
Ehh.. I told him he needs to call someone who knows this stuff. I followed a wire that went to the low oil switch, then it continued on to the air switch, then it comes out and comes out of the same conduit it started from. So the two wires I see together are connected to the same circuit. One in and one out. He claimed to have connected those to 110 and it turned on. I showed him today how it goes in a loop and says he don't know why it's like that.. Then he said he is thinking of running it bypassing those switches. I told him I was not the guy to ask and I wouldn't be around to see if it works.
