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Please identify the +- and ground wires on this component.

I can't read the label on the motor, but if you are planning to use it with an AC power supply, the "positive or negative" question becomes irrelevant.

Under normal circumstances, the supply wire is black, the return wire is white, and the equipment grounding wire is green. However, I see black, white and blue. If you have an ohmmeter, see if the blue wire is connected to the frame of the motor. If not, perhaps it is a 2nd speed supply wire or something like that. Check the pairwise connectivity of all three combinations of wires. If there is some moderate resistance among all three pairs, then you have a multi-speed motor without a grounding conductor.
 
This is a regular shaded pole AC motor. Those motors are single speed no reversible. The coil should connect directly to AC, polarity unimportant.
What I am not sure in your motor are the two wires - grey and blue coming from one side of the coil. It can be dual voltage, or some thermal sensor or thermal fuse.. In any case the AC should be connected to the white and most likely the blue wire. If not working in this configuration, connect the grey instead.
 
Thanks everybody for chiming in. This is a convection fan from a Jenn-Air Wall Oven with the Model # WW27430W. I thought it was a 120v component that does not use a power supply. At least this is what I hope it is. Like mentioned, I will look up the part number.
 
Looking up the part number didn't shed any light if this is 120v or something at uses a power supply.
I took some macro pictures of the part. From the printed code, is it used with a power supply or not?

http://i234.photobucket.com/albums/ee187/rodjava/rodjava023/IMG_4734_zpsbgaanhsb.jpg

http://i234.photobucket.com/albums/ee187/rodjava/rodjava022/IMG_4731_zpstv9voskg.jpg

http://i234.photobucket.com/albums/ee187/rodjava/rodjava022/IMG_4732_zpskdb0aczt.jpg

Again, thanks for all your help.

Rod
San Francisco
 
The circuit diagram indicates that it is a 120 volt fan. White is one side and the other is shown as BR which I suggest means brown.

I would connect the white to neutral and then touch a hot to either of the colored wires.

But first get an ohm meter or continuity tester and check all leads to the frame. If any show low reaistance or continuity don't use that wire.

5¢

Parts for Jenn-Air WW27430W: Wiring Information Parts - AppliancePartsPros.com

+8¢
 
Label states 0.28 amps one could use ohms law to guess resistance.

It is mounted inside equipment so safety ground may not be needed on the cable unless fan is floating.

Usual black hot white return and blue sometimes hot for off shore or other voltage.

Get the wiring diagram for the device this is installed and you can see what it is.

Since it is connected in a range the source can be either 120 or 240 so it may be 2 speed but not likely for that type of motor.
 
Thank you membership.
You were all right. It was a 120 volt motor.
I used the white and blue wires and it ran in the
direction and speed I needed.

Have a great day.

Rod
San Francisco
 
rodjava said:
Thank you membership.
You were all right. It was a 120 volt motor.
I used the white and blue wires and it ran in the
direction and speed I needed.

Have a great day.

Rod
San Francisco
Click to expand...
The white and purple wire will give you a lower speed
rodjava said:
Experienced machinist but a novice when it comes to electrical need help
identifying the positive, negative and ground wires on this component.

Its a convention fan from an oven which I would wire it with a toggle switch directly 120v plug.

http://i234.photobucket.com/albums/ee187/rodjava/rodjava022/IMG_4730_zpsems8zlrz.jpg

Thanks in advance.

Rod in San Francisco
Click to expand...

WHHJR said:
See attachment in post 7 above... RTP
Click to expand...
 
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