4 wire Split phase 115v motor wiring

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Old 04-04-18, 03:32 PM
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4 wire Split phase 115v motor wiring

I had to replace a motor on my 4" jointer. Old motor had only black & red wire. Replacement motor has 4 wires, Black, red, blue & yellow. It appears that for CCW rotation I need to connect Blue & Black to hot side & Red & Yellow to neutral.
Is that correct?
 

Last edited by TallPall; 04-04-18 at 04:55 PM.
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Old 04-04-18, 05:39 PM
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Welcome to the forums.

That could be correct.
There should be a wiring cover plate with the connection diagram on it.

Is this what you see ?
CCW = Blue & Black to hot side & Red & Yellow to neutral
CW = Yellow & Black to hot and Red and Blue to neutral
 
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Old 04-04-18, 05:48 PM
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Yes it is. I was confused by this replacement as it was supposed to be the same motor as was on it except that is enclosed with a fan. The old one just had a red & black wire, but to reverse you just swapped the black & red.

And it has a Read This First sticker on the motor that says this can be wired for 115v or 220v and another sticker with the wiring diagram showing the CCW & CW rotation, but no mention about 220v wiring how to. It shows the two 115v rotation wiring only.
 

Last edited by TallPall; 04-04-18 at 06:27 PM.
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Old 04-05-18, 07:20 AM
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There is no diagram on the cover plate, just on the sticker, which is why I was confused whether or not the drawing was correct. It is a Dayton motor bought at Grainger's.
 
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Old 04-05-18, 11:41 AM
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Resolved - Called Grainger and talked to a motor expert. The previous motor that only lasted 3 1/2 years and this motor are wrong for the application as they are General Use motors for things like fans that have no load. I have a farm Use motor on order and it is a 28AA96 that can be wired for either 115 or 230. The sticker saying that the motor could be wired fr 115/230 was a factory error and should not have been on that one. So, my case is resolved. Lesson learned - if you are replacing a motor & the old one can not be matched, find an expert to give you choices for a replacement!
 
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