How to run a 3-Phase Motor in your garage/home with single phase power
We found 3-Phase Motors in: Drill Press, Lathe, Milling Machines, Air Compressors, etc. BUT at home/shop we can't make it run because we don't have 3-Phase Power! What can we do?
Some will say: "I just buy a single phase motor a replace it" That is one solution which can solve the problem BUT you will be endup paying more and your electric bill will be higher.
You can buy a Static Phase Converter which will solve the problem and YOU WILL BE SAVING MONEY at the same time. 3-Phase Motors use less amperage than Single Phase Motors!
In General, Amps/HP Ratings can be estimated as follows:
115 Volts Motor - Single Phase: 14 Amps/HP
230 Volts Motor - Single Phase: 7 Amps/HP
230 Volts Motor - 3-Phase: 2.5 Amps/HP.
Example:
1 HP Motor Single Phase with 115V will draw: +/- 16 Amps.
1 HP Motor Single Phase with 230V will draw: +/- 8 Amps.
1 HP 3-Phase Motor with 230V will draw: +/- 3.6 Amps.
The Power Company charges for the KW or KVA we use, KW= Amps X Volts, that means the higher the Amperage the more they will charge. (This is an aproximation) But as you can see, you'll pay more. Now, IF you use a Staic Phase Converter you will be saving money and energy. Static Phase Converters are an Economical Solution for the Problem, You will be able to run your 3-Phase Motor at 2/3 of the Motor's rated HP!
For Air Compressors, water pumps, etc. with pulleys, you'll need to reduce the Motor's Pulley's Diameter by 1/3 or use a bigger Motor.
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