CM 1/2 HP motor wiring

[ckadams00]

I'm not very educated about wiring . . .working on Dayton 1/2hp capacitor motor and want to run a outlet cord to the motor and then back out to a on off switch.

The motor has four lead posts - one with a "green" wire from the windings and one with a "red" wire from the windings. I assume (I might be wrong) that both of my white wires (switch and plug) connect to one and both my black connect to another.

When I fired it up it spun but blew the breaker. Just want to confirm I am wiring this right .. .

Clockwise: 12 oclock post is the green wire from windings with a brass jumper to 3oclock post which I have both black to.

9 oclock is the post with the red wire from the windings with a brass jumper that I have both white connected to at 6oclock.

I know that the green and red wires are on the right posts.

I have the ground wire from the plug and the switch connected to the ground screw on the motor casing.

What am I doing wrong?

 

[American Locomotive]

What you're doing wrong is not posting a picture of the motor connections or its wiring diagrams. Every motor is different

 

[ckadams00]

What you're doing wrong is not posting a picture of the motor connections or its wiring diagrams. Every motor is different

Trying to fix that - Photobucket is acting up

 

[American Locomotive]

Okay, from what I can tell, you have wired it very wrong. I've made a quick schematic showing how I interpreted you wired it. Can you confirm this is how you wired it?

 

[ckadams00]

Okay, from what I can tell, you have wired it very wrong. I've made a quick schematic showing how I interpreted you wired it. Can you confirm this is how you wired it?

Yep - what shoud I be doing differently?? And thank you for the help!

 

[manwithtools]

What is a CM?

 

[Bert_]

The switch should be in series with the black wire coming from the plug. Currently it is wired in parallel which, as you found, makes a short circuit.

I'm not so good with drawings so perhaps some one else can help with that.

 

[bubinga]

Trying to fix that - Photobucket is acting up

garage Journal Photo hosting never Acts up.

 

[American Locomotive]

Yep - what shoud I be doing differently?? And thank you for the help!

Think about what your circuit is doing. Pretend the motor isn't there, but the connections are made the same way they are now. What happens when you turn the switch on - as in what does the switch effectively do inside? The switch more or less touches two wires together inside. So say you have your cord plugged into the wall - what happens if you were to just touch the two wires on the cord together? You'd be shorting it out. That's what your switch is doing the way it's weird.

Your switch needs to disconnect the power going to the motor, not be put across the power. I've attached a diagram of how it should be wired. But I don't want you to just look at the picture. I want you to understand why it's that way, because this is very important, very basic electrical theory.

 

[ckadams00]

Think about what your circuit is doing. Pretend the motor isn't there, but the connections are made the same way they are now. What happens when you turn the switch on - as in what does the switch effectively do inside? The switch more or less touches two wires together inside. So say you have your cord plugged into the wall - what happens if you were to just touch the two wires on the cord together? You'd be shorting it out. That's what your switch is doing the way it's weird.

Your switch needs to disconnect the power going to the motor, not be put across the power. I've attached a diagram of how it should be wired. But I don't want you to just look at the picture. I want you to understand why it's that way, because this is very important, very basic electrical theory.

THANK YOU! This makes a lot of sense.