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Mike, Master Electrician
Category: Electrical
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Experience:  Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer
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How to rewire a 3 phase 480 volts motor to 3 phase 240 vol

Customer Question

how to rewire a 3 phase 480 volts motor to 3 phase 240 volts
Submitted: 1 year ago.
Category: Electrical
Expert:  AssuredElectrical replied 1 year ago.
Welcome. My name is ***** ***** would be glad to assist.
Make and Model of the motor?
If you can get a picture of the motors nameplate, that may be more beneficial.
Let me know and we can continue,
Thanks
Customer: replied 1 year ago.
i have several motors to do and the reason we moved into anew place which only has 240
Customer: replied 1 year ago.
most are 240/480 3 ph
Expert:  AssuredElectrical replied 1 year ago.
Ok,
All motors are not necessarily the same.
Depends on manufacturer of the motor, year made and other parameters that determines their wiring.
Each may be different or some the same.
Either need the nameplate picture or motor data for each.
Wish it was a quick way, but it isn't, unfortunately.
Almost all motors have the wiring diagram right on the nameplate, that has been a standard so the wiring goes with the motor to avoid confusion.
Thanks
Customer: replied 1 year ago.
well tommy thank you. i'll figure it out
Expert:  AssuredElectrical replied 1 year ago.
Ok, very well.
Remember, the wiring will have to increase in size with the lower voltage, the amperage will almost double
Thanks
Just let me know if you need assistance

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