AboutCharles C. Jones Expertise Let Me help you with your problems with single phase and three phase electric motors. I can tell you how to troubleshoot your motor problems. From simple testing of capacitors, how to test your windings, replacing bearings, and general maintance. Before we go any further, remember these words of advice: Disconnect the power before you do anything! Please limit your questions to electric motors and there immediate components. I review each question, and if I can answer or help, then I will. If you receive a rejection, it means it is out of my expertise, and just do not have the answer. I'll be waiting for your question, and see if I can help you. Thanks for using AllExperts!
Experience I have 30 years experience in the repair of electric motors and related equipment. I am a master machinist in the field of motor repair. I have been employed with my company for 27 years. When you ask your question, give me all the information you can about your problem. I have a lots more to add, but for the everyday do-it yourself kinda person, it might get to technical. So ask away, if I can't give you a good answer, I'll find someone who can
Question I am currently an apprentice and i am having difficulty with an assignment. I am working on an 3 phase motor within an air handling unit. How would i test the running current for this motor? would i put a clamp meter around each of the phases or do i only need to put the clamp meter around 1 of the phases?
cheers
Answer Each phase should be tested and compared to each other. They should be uniform amperage draw. There is one exception, if the transformer has a delta connection, then you might have a "power leg". A delta connection may have one leg voltage higher than the other two, and therefore will pull higher amps. This is not a problem with a three phase motor. This would only affect single phase lines from the three phase entrance. Hope you do well on your assignment!
