wireguy8169
Senior Member
- Location
- Southern Maine
I was reading another post and did not want to start a thread with in a thread so I am posting fresh. We are currently installing four 50hp pumps in our waste water facility. They are coming in completlely assembled and Laser aligned. Anyhow, two of the guys finished the first and were ready to test it and a question arose, regarding rotation. Anyhow to make a long story short, is there a standard for motor manufactures, when they build a motor if you hook up the lines (lets just say) 1-A, 2-B, 3-C (as verfied by a phase sequencer) that the motor will have a certain rotation? I have in my experience marked the phases (as they were removed from a motor) and after installing the new motor the same way it still had the wrong rotation (I am sure most of us have). Well, if there is not a standard there should be. I do know that the company that rebuilds our motors especially the larger ones when they test it will give us the rotation and hook up.