Converting 3 blade 220v plug to 4 blade...Please help....

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Old 02-14-13, 11:04 AM
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Converting 3 blade 220v plug to 4 blade...Please help....

I hope I'm posting this in the right area.I appreciate any input as I have no knowledge in electrical.I have a concrete floor grinder that requires 220v to run.My plan was to hook it up to my 5500 watt generator in the 120/240v outlet.My dilemma is that the plug on the machine is a 3 blade and the the generator takes a 4 blade connector.Can I swap the plugs out ? If so what wires go where? thanks for any help...
 
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Old 02-14-13, 12:23 PM
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You can make an adapter. Use a four prong plug (male cord cap) to fit your generator, short length of 3-xx SO cord and a 3 prong female cord cap to fit your grinder plug.. The black and white of the SO cable will go to the hots of the plug and female cord cap. No connection to the neutral on the male plug end. Green wire of the SO cable goes to the grounds on each end. "xx" refers to the size of the SO cable which is based on anticipated load.
 
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