Any electricians care to help me wire in my new compressor?
Is it black to black, white to white and green to green?
Is it black to black, white to white and green to green?
how to..compressor?
- Thread starter KY Longhunter
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Should be
looks like 120volt and yes black to black white to white ibew local 26
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- #4
I did white to white and black to black to the tabs circled in the picture. The compressor switch was in off position, but it came on anyway and scared me. Strange?
The black cable in picture goes to the compressor switch. The yellow cable goes to outlet on the wall.
Is the compressor coming on because the pressure in tank is zero?
What about green? Should I ground the cable to the same point on compressor?
The black cable in picture goes to the compressor switch. The yellow cable goes to outlet on the wall.
Is the compressor coming on because the pressure in tank is zero?
What about green? Should I ground the cable to the same point on compressor?
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- #5
Isnt there a switch you should be wiring to instead of the motor?
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The plug you show is for 120 volts not 230.
The 230V wiring should go to the pressure switch then the motor. Depending on the motor amps, there may also be a contactor (relay) between the pressure switch and the motor.
The 230V wiring should go to the pressure switch then the motor. Depending on the motor amps, there may also be a contactor (relay) between the pressure switch and the motor.
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my motor is wired green on the green bolt black to the top tab and white on the other upper tab all coming out of the pressure switch
edit i took a pic of mine mine also has a little yellow jumper wire .
edit i took a pic of mine mine also has a little yellow jumper wire .
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Just a note: Some motors can be wired to run on either 120 or 230 volts. It looks like a new compressor, do you have the instruction manual? It should show how to wire it either way... 
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your first pic it looks like it is already wired up what is the wire you are playing with it must go into the switch or somewhere else not into the motor
the plug pictured is a 50A 230v plug. NOT a 110v
the two flat blades are the two hots, and the round pin is the neutral
as for the yellow sheathed romex house wiring, check it with a VOM. It *should* show 240VAC when testing the white and black. black-green and white to green should show 120VAC. If not, then pull the breaker panel cover and make sure the electrican didnt use the green for a hot lead and attach the white to the neutral bus bar(which is an easy mistake since thats how its done for 110V)
Also, you should be connecting the romex to the switch on the compressor, not the motor? you souldnt need to even touch the motor cover? any connection should be at the pressure switch/unloader.
the two flat blades are the two hots, and the round pin is the neutral
as for the yellow sheathed romex house wiring, check it with a VOM. It *should* show 240VAC when testing the white and black. black-green and white to green should show 120VAC. If not, then pull the breaker panel cover and make sure the electrican didnt use the green for a hot lead and attach the white to the neutral bus bar(which is an easy mistake since thats how its done for 110V)
Also, you should be connecting the romex to the switch on the compressor, not the motor? you souldnt need to even touch the motor cover? any connection should be at the pressure switch/unloader.
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I'm no electrician but aren't 230 volt plugs supposed to be at an angle? Like: \ . / ? I thought all 15A 120V plugs were |.| 20 A 120V are -.|...???
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- #13
OK, I feel rather retarded. 
I have been trying to wire to the motor not the switch.
In my defense, my Brand New compressor didnt come with any instructions regarding wiring instead says "consult an electrician."
Im not home right now to try and take cover off of switch, but will check it out when I get home....
THANKS.
p.s. The plug shown is rated for 230V 50amps.
I have been trying to wire to the motor not the switch.
In my defense, my Brand New compressor didnt come with any instructions regarding wiring instead says "consult an electrician."
Im not home right now to try and take cover off of switch, but will check it out when I get home....
THANKS.
p.s. The plug shown is rated for 230V 50amps.
Like: \ . / ? I thought all 15A 120V plugs were |.| 20 A 120V are -.|...???
Lets just say there are so many plug configurations you need a chart to keep track.
check here
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Well I'll be dipped! Never knew that... Thanks for the link and education.
I take it the blade spacing is different or something?
I take it the blade spacing is different or something?
no worries. thats not even taking into account the twist lock configurations that boats, RV's, dryers etc can use.
blade spacing, and orientation of thin and wide terminals makes it specific to the application.
blade spacing, and orientation of thin and wide terminals makes it specific to the application.
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- #17
OK got compressor running thanks to you guys.
So now Ive got what is probably another stupid question.
The pump has a threaded hole on top that looks like it is missing something? Maybe a filer of some sort?
Any ideas?
So now Ive got what is probably another stupid question.
The pump has a threaded hole on top that looks like it is missing something? Maybe a filer of some sort?
Any ideas?
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Quick question: Is the open threaded port sucking or discharging air when the unit is running? (please exercise caution while checking, no offence meant but FOD can damage the comp and getting hurt ...well nough said)
Oif it is sucking then x2 on the inlet filter . If it "blows air" then there should be a hard line from the compressor to the air tank.
Oif it is sucking then x2 on the inlet filter . If it "blows air" then there should be a hard line from the compressor to the air tank.
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- #20
It is sucking air.
Checking on whether it should have come with air filter. Seems like it would have come with this, but I got the compressor right off the showroom floor...