Posted by JustIn Case on December 01, 2021 at 10:21:25 from (97.98.248.144):
In Reply to: Electric motor wiring posted by Bkpigs on November 30, 2021 at 08:37:48:
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The nameplate leaves a lot to be desired as others have also commented. Without a photo of the whole motor I cant tell just what type of motor it is. I dont see a capacitor anywhere so Im guessing this is just a plain old 115 volt induction start/induction run motor. Id love to post a sketch on here but Im not sure how to do this. Anyway since this is a single voltage single phase motor it is only going to have two windings hence four leads. If one has an Ohm meter or way to check resistance/continuity they likely will find continuity between terminals 1&3. Then check for continuity between terminals 2&4. If they read the resistance in Ohms the lower resistance winding will be the run winding. The higher resistance reading will probably be the start winding. If there is a way to operate the centrifugal start switch the start winding will show open when the switch is activated. In operation once the motor is up and running the centrifugal
Start switch opens disconnecting the start winding. If I were to be on this Id bet the run winding is between terms 1&3.
To reverse the motor rotation we just have to flip flop the start winding, in essence running current through in the opposite direction if we look at it as if this was a DC motor which it is not but that an example. Hope this helps, the nameplate could have been made easier to understand if theyd drawn a winding between 1&3 and another winding between 2&4.
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