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About Robert Wilber
Expertise
Licensed Philadelphia electrician serving Delaware, Chester, Montgomery and Philadelphia County in Pennsylvania. I install and repair residential, commercial and industrial wiring and lighting. Troubleshooting and repair of problems that stump other people is my favorite. I am willing to help people figure out why things don`t work. I understand motor controls, transformers and machine wiring.
I am not willing to teach novices to do installations of advanced work or replace basic personal research.
Experience
Experience in the area
I have 35 years experience in residential, commercial and industrial electrical construction and repair, 480 volts and below. Organizations
Electrical Association of Philadelphia, Independent Electrical Contractors Association, International Association of Electrical Inspectors
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You are here: Experts > Home/Garden > Home Improvement/Repair > Electrical Wiring in the Home > static phase converter
Expert: Robert Wilber - 11/1/2009
Question
I have a lathe with a 3 phase 7 1/2hp motor . I have run #10 wire 220v single phase to the disconnect. I do not have three phase power so I am using a static converter rated for 8 hp.I need to find what two wires open the magnetic starter. What is your recommended method to find the correct combination?
Answer
Contact the manufacturer.
By the way, did you know that most sources state something similar to the following:
"Static Phase Converters are not true phase converters. They are usually manufactured with a capacitor control box and an electric motor. They do not convert single phase power to three phase power, nor do they produce three phase power. Static Phase Converters can only produce three phase power for a few seconds during the start up time of equipment, thus leaving equipment to run on a single phase source of electricity, which can damage machinery."
Also, several manufacturers specifically state static converters should not be used for lathes
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