Older Marathon Electric 1/4HP motor wiring


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Old 08-30-15, 04:31 PM
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Older Marathon Electric 1/4HP motor wiring

I have a Marathon Electric 1/4HP electrical motor that was with the place when I bought it. I would like to use it to power a shop fan.

Most diagrams I found online have a multitude of wires but this one only has 2 coming out of it, which I assume are neutral (white) and hot (red)?

Is that accurate?
Also, looking at the board photo can the rotation be reversed?
How about a variable speed switch (I assume not)?

On the board, the white wire goes to LINE 1, the blue wire is marked 3 and the one with the black and red wires is marked 2. The photo makes it look like the blue comes out of the red wire but it's underneath it.

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Last edited by kramttocs; 08-30-15 at 04:54 PM.
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Old 08-30-15, 04:59 PM
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According to the motor plate..... that is a 120v motor only and spins CCW only.
No multiple speeds either..... 1725 RPM.

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Old 08-30-15, 05:06 PM
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Thanks! Is white = neutral and red = hot correct? There wouldn't be a problem wiring a light switch on the hot line, right?
 
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Old 08-30-15, 05:08 PM
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Your wiring looks correct and a switch in the hot line would be fine.
 
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Old 08-31-15, 04:33 PM
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As I was putting the plate back on I notice it had a diagram on it - I must have been completely oblivious to have missed it when taking it apart.

It shows that swapping the blue and black wires (2 and 3) allows it to work in clockwise rotation. Tried it and sure enough.

Just wanted to add this for anyone else that comes across a motor like this.

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