reman
Well-known member
I have found another motor that may be useable for my 3 cyl. compressor. But I need to know how to wire it up. I know the 2 big wires are lines, but where do the smaller ones go? I can,t totally understand the diagram.
Help on electric motor wiring.........
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Corndoggeh
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The two biggest wires with the twisted exposed ones look like you load and neutral. The two smaller wires look to be your polarity wires since the plate tells us that this motor is reversible, however, there should be more than 4 wires in there if it is reversible, there should be 6 wires by the wiring diagram. But there also looks to be a grounding screw so it looks like there should be a ground wire with it in the box?
Are there any numbers on the wires themselves? That would help in figuring out which ones would be 1-6.
Are there any numbers on the wires themselves? That would help in figuring out which ones would be 1-6.
Jay1989
New member
If you can post a clear picture of the data plate I will be able to help you.
Jay
Jay
theoldwizard1
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No neutral. This is a 208-230V motor.
rburke65
Well-known member
Correct....no neutral. And you might wan to dig around in that junction box and see if here are 2 more wires. As said, there should be 4 small wife's in there and they will be connected as shown on the wiring plate....either 1 and 6 together ..4 and 5 together. That will give you clockwise. OR 1 and 5..... and 4 to 6......and that will give you a counter clockwise rotation.
Corndoggeh
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My mistake, I'm used to dealing with 110v far more often than 220v.
klassenl
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If the diagram shows 4 wires there should be 4 wires in the box. Suggesting there should be 6 wires when the diagram shows 4 is....well. ...
Then you must be in the UK because that is the only place in the world where 110V is available, required on building sites where each leg is 55V, stepped down from 240V.
USA is 120/240V.To the OP, are there any numbers on the wires? Each wiring wiring diagram is for CW or CCW rotation, motor is a 208- 230V rated motor, you really have a 50/50 chance of getting it right the first time.
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nehog
Well-known member
Take one fat, one skinny wire, connect to one side of the line.
Take the other fat, and the other skinny wire, connect to the other side of the line.
If the rotation is the wrong direction, swap the two skinny wires.
Take the other fat, and the other skinny wire, connect to the other side of the line.
If the rotation is the wrong direction, swap the two skinny wires.
matt_i
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You need the numbers on the wires insulation to understand the diagram. The diagram indicates how to wire up a drum switch, or use a set of 2 pole contactors to switch the rotation. If its a fixed-forever rotation, you can make all the terminations inside the peckerhead. If you desire to reverse rotation, the 4 leads will have to be extended out to some junction box, be it the enclosure of a drum switch, or another enclosure for housing contactors.
My free advice is not to try to plug-reverse the rotation as one can do on 3-phase....instead wait patiently for the motor to come to a complete stop before reversing.
My free advice is not to try to plug-reverse the rotation as one can do on 3-phase....instead wait patiently for the motor to come to a complete stop before reversing.
swaterbenny
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I second this.
Corndoggeh
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Then you must be in the UK because that is the only place in the world where 110V is available, required on building sites where each leg is 55V, stepped down from 240V.
To the OP, are there any numbers on the wires? Each wiring wiring diagram is for CW or CCW rotation, motor is a 208- 230V rated motor, you really have a 50/50 chance of getting it right the first time.
US, but my entire family is European so it must have rubbed off growing up.
No one really bats an eye when I say 110. Not to mention outlet voltage varies between 115 and 125marinusdees
Well-known member
Third this.
Okay, here is some further info. There definitely is only 4 wires. 2 big and 2 small. One small one has apparently been marked with a short piece of red heat shrink. The 2 smaller wires are labeled as #5 and #6. I hopefully got some better pics of the wiring diagram. This thing is just about impossible to get a picture of the full data plate because of the way it wraps around the motor........With seeing the diagram more clearly, I think I see what you guys are saying about reverse and straight rotation. Anyway, please add any further comments.
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swaterbenny
Well-known member
Confused what your looking for here? 
3 of us have agreed with the same method, I have personally wired about 100 motors, 120v-480v some with no numbers and 9 leads. Hook it up, turn it on you will know if it's wrong.
The thing with the drum switch I don't really get.... it's just showing you how to reverse it... I would say it has 4 leads because its a reversible single phase motor.. otherwise you would have just the two wires..
3 of us have agreed with the same method, I have personally wired about 100 motors, 120v-480v some with no numbers and 9 leads. Hook it up, turn it on you will know if it's wrong. The thing with the drum switch I don't really get.... it's just showing you how to reverse it... I would say it has 4 leads because its a reversible single phase motor.. otherwise you would have just the two wires..
bczygan
Well-known member
Just wire it up already!
rburke65
Well-known member
Wow.....how did I mis read that wiring plate.? Ok everyone....all together now..."YOU DUMB ***". Yes....only 4 wires. I apologize for the wrong info. Truly sorry........