Re: Electric motor wiring

Posted by electro on December 02, 2021 at 20:21:13 from (206.74.76.168):

In Reply to: Electric motor wiring posted by Bkpigs on November 30, 2021 at 08:37:48:

Until the OP gets back with more information it is all just guessing.

I believe this motor was part of a whole dedicated setup and the label reflects two parts of the needed setup information. Under the section labeled "115 volt connection" is the information needed to wire the far end of the BX cable to the piece of equipment. The terminals 1,2,3,4 under that section are for the external equipment board not the internal motor terminal board. The label section under the heading of "rotation" is for the internal terminal board that was inside the motor although that board appears to be missing in the photo. Those numbers apply to the internal motor terminal board not the external equipment terminal board that would have been at the far end of the BX cable. Two different terminal boards and different connections that happen to both be labeled 1 to 4 but the terminals and their numbers are not the same board and are not equivalent.

The thin wire motor wire colors are likely correct and reflect the standard motor wire colors for run and start. The BX cable wires likely are the colors the manufacturer chose to run external of the motor to their particular piece of equipment but do not represent the standard internal motor wires. That is why the "115 volt connection" section has listed colors that match the BX cable wire colors, the larger wires, but are different from the colors of the thinner motor wires.

That one large label should really be two smaller labels since two separate parts of the wiring are represented, the motor to equipment external wiring under the "115 volt connection" and the actual internal motor wiring that everyone is used to under the "rotation" heading.

Besides waiting for the OP to respond, I would run it with thin motor wires L1, blue, Black together and L2, yellow, red together. I would ignore the colors of the larger wires altogether.

It is hard to know if the order of the larger wires is correct since they are connected with wirenuts and may have been inadvertently wired incorrectly sometime in the past. The thinner motor wire colors do fit the standard for motor wire colors so using those colors as a guide should produce a working motor.

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