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Wire up a 3 phase motor to single phase 240v power

I have a car hoist with a 3 phase motor, i need to change the wiring so i can at least use it even though it will run allot slower than its ment too,,,i know this method is posable cause my father did it many years ago to a simlar hoist...
any mega brains out there ?

note same motor as air conditioners ...

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  • Anonymous Nov 24, 2008

    any way to use 3 phase plasma cutter on single phase power?

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IT CAN BE DONE USING A CAPACITOR ACROSS 2 OF THE WINDINGS IF ITS A 240V 3 PH MOTOR TRY A GOOGLE SEARCH FOR EXACT DETAILS OR ALTERNATIVELY USE A PHASE COVERTOR TO CHANGE SINGLE INTO 3 PHASE......

Posted on Jul 07, 2008

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3ph motors will only run on 3ph power, trying to single phase will only burn up windings,

Posted on Dec 12, 2007

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1 Answer

I purchased a 3 phase electric motor by mistake. but i needed a single phase, anyway to wire it down?


You cannot make a 3 phase motor into a single phase motor.
You could, ( as you suggested), buy a single phase to 3 phase inverter. Even a 'variable speed drive' VF (variable frequency drive) inverter for greater flexibility, but depending on the size and purpose of your motor the cost might prove to be prohibitive.

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How I can make my sw4048 upv in split phase? 120/240v


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SINGLE PHASE WIRING DIGRAM


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Where can i find ac motor connection diagrams, specifically, single phase forward and reverse, and 415v motor to 240v power diagrams? thanks andy


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1 Answer

I take it the wiring harness in front of me is 3 Phase. I have a Green wire, Red, Black and White. The wiring diagram on the back is marked L1, L2, N, E. Just need to know which wire goes where thanks.


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1 Answer

I need a three phase wiring diagram for 8145-20 model timer.


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Clock motor is 240V.
You need a transformer to convert 3-phase to single phase 240V to operate timer.
Then timer outputs can control 3-phase power using 3-phase contactors
Contactor below is 3 phase with 240V coil
http://www.grainger.com/Grainger/DAYTON-Contactor-2UTP7?Pid=search

Defrost timer wiring diagrams show below:
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2 Answers

Taking my P660 out out a building with 3 phase power and into one with only single phase. Converter says motor will run on 2/3 power. Good or bad idea????


Good!

MOTOR:

21?2 H.P., Hobart designed, high torque ball bearing,

ventilated within mixer enclosure. Single-phase is

capacitor-start, induction-run type.


Three-phase is

polyphase squirrel cage, induction-run type.


Single Phase 208V 20.0 Amps

240V 17.0 Amps


Three Phase 208-240V 8.6 Amps

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1 Answer

How do I connect multiple (two or more) 3 phase ac power sources (from wind turbine alternators) to a single 3 phase junction to power one device?


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