Posted by MarkB_MI on January 25, 2009 at 04:24:26 from (216.234.98.35):
In Reply to: Re: Generator help posted by 7lazy77 on January 24, 2009 at 22:27:25:
U1 230V, I1 50A & 60Hz: It draws a maximum of 50 amps at 230 Vrms, 60 cycle power.
~ Uo 79V: Maximum open-circuit output voltage is 79 Vrms.
U2 25V & I2 225A: Maximum output current is 225 amps at 25 Vrms.
Generator ratings are almost as inflated as air compressor ratings. The "5500 watt" rating of your generator is really 5500 volt-amps. (There is a difference between watts and volt-amps, but that's not worth going into right now.) You welder draws a maximum of 11500 volt-amps. So you are asking your generator to handle a load double that for which it was designed.
Now, under typical conditions, your welder isn't going to be operating at capacity, so let's say you need really need 30 amps, or 6900 volt-amps. That's still over your generator's rated capacity, but less than its "surge" rating. Will it work? Maybe. Would I try it myself? No.
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