Has this happened to you? Have you ever removed a motor from like a fan, waited a couple days, and then forgotten how to wire it so that it rotated properly, clockwise or counter clockwise? I have, plenty o’ times which is why I assembled this stupid and simple little tester for around $10.
Not much is more frustrating than installing a new motor into its frame, wiring it up, turning it on and then seeing it spin in the wrong direction. Because then you have to turn it off, disconnect the stubborn wires again, and remove it from the frame. And then reverse the procedure to re-assemble it. Fun times.
Here is what sometimes happens to me.
I will find a motor that needs to be replaced. Maybe because of the way it’s installed, or maybe because it’s cold out I don’t feel like making trips, for whatever reason, I remove the motor. Almost always I will crudely draw out the wiring diagram when removing it for ease of installation later. There are times when I forget to note which way it is wired to rotate, other times it takes so long to get parts by the time I do, I have forgotten.
The motor directional tester here is for 120V and below but you can make them rated for whatever you want as long as the components you use are rated for it, like 600V, etc.
Not only will this motor tester show you the direction you have it wired to spin, it can also show you if the motor is good or bad period. There should be a few pics to look at to help you along in building your own. It’s fairly convenient and it fits easily coiled up inside my tool box. Click ahead to check it out. Read more