What's the point of using one when you have to bump the motor anyway to make sure it's spinning the right way. My boss wants us to check rotation at the outlet check rotation at the panel but when we bump the motor it's going the wrong way anyway! Confused. Thank you for your help.
Phase rotation meter
- Thread starter zappy
- Start date
- Status
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
He probably wants to document a base line for the direction at the panel, then match it at disconnects, sub panels, etc. This is so everything is the same direction as far as connection points. There is no way to know the motors direction until you check it.
busman
Senior Member
- Location
- Northern Virginia
- Occupation
- Master Electrician / Electrical Engineer
I use one on replacements to prove I got rotation the same as it was when I started. Photos before and after.
Mark
Mark
- Location
- New Jersey
- Occupation
- Journeyman Electrician
If you're using color coded wire from panel end to the outlet this can be a waste of time unless you're using a receptacle which could be incorrectly wired. If it's panel > starter/VFD > motor and the color scheme is kept the same al the way through then only the motor factory wiring configuration will change the rotation.
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
I used to have a motor rotation tester, connected to motor leads it gave motor lead connections when shaft was turned. It was not worth the trouble to use.
For three phase wiring I would color code and maintain CW rotation, and have poco connect for CW rotation
For three phase wiring I would color code and maintain CW rotation, and have poco connect for CW rotation
Here you could ask, but you would end up with what we deliver
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
With CW rotation the phase monitors (in motor) controllers worked without swapping leads
- Status