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What is this extra wire on a blower motor?

Posted by meck1 (My Page) on
Thu, Nov 19, 09 at 8:31

I have a 1/6 hp, 2 speed, 230 volt motor that I want to use on a blower for ventilation in the attic. The plate on the motor is very clear for three of the wires. Orange is the line. Red is low speed. Black is high speed. This motor, though, has two black wires coming from it. There is no plate that can be removed from the motor to see if the two blacks go to the same point. Can someone tell me why there are two black wires? If I can ignore one of them, which one?

Any help is appreciated. Thanks.


Follow-Up Postings:

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RE: What is this extra wire on a blower motor?

The 2 wires most likely are for a run capacitor.Wich you will need.


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RE: What is this extra wire on a blower motor?

When I hooked up the motor for a trial run using the orange (line) and red (low speed) wires, it started quickly and ran fine with no capacitor. Why would it need one?


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RE: What is this extra wire on a blower motor?

are you sure that the motor is not reverse able? paulbm


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RE: What is this extra wire on a blower motor?

I haven't tried to reverse it as it is running in the direction that I want. There are no changeable connectors on the motor itself. The only problem that I'm having is that the motor has two black wires running into it and the engine plate with the wiring diagram only shows one. I want to know what the second black wire is for. I get high speed when using either black wire. There seems to be no difference in running.


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RE: What is this extra wire on a blower motor?

Who makes the motor and what is it's model number. Have you contacted the manufacturer?


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RE: What is this extra wire on a blower motor?

Someone added that other wire to turn it on with an added
switch. If you don't use it cut it off.


 
 

 

 


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