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Old 02-04-2009, 06:11 PM
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awert awert is offline
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3 phase and 1 phase

could somebody tell me the difference between 3 & 1 phase in a inverter type welder? I under stand 3 phase and it's relationship to electric motors, but welders???? Reason i ask is because i have a great opportunity to get the inverter i want, "cheap" but it's 3 phase, and i know all about rotary/static converters,or VFD, i built one. I don't want to go that rout. I want to change the guts of the welder to run on 220 1 phase. as you may or may not know, some welders come from the factory as 3 or 1 phase, just switch wires around and that's it. I know there is no difference in the electronics/ PCB. so what is different?
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