220 plug adapter for old welder?

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Old 02-13-09, 04:19 PM
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220 plug adapter for old welder?

Hi,

I recently inherited a fairly old (~40 yr) arc welder - a Wards Powr Kraft 295, to be exact.

It's got a regular-looking 3-prong plug (2 flat prongs, both going the same way, and a round ground prong) except bigger.

I've got a 5000 watt generator with a 220 volt outlet for a circular 4-prong plug.

Is there an adapter or something I can get that'll allow me to use the the welder with the generator? (Looked, couldn't find one)

Maybe the answer would be to swap the cord/plug on the welder?

Is it even feasible to try and use the welder with the generator? The welder can pull up to 295 amps (not that I'd ever use it at max setting).

Thanks in advance.
 
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Old 02-13-09, 04:50 PM
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Your welder has a NEMA 6-30P cord cap. Look at your twist lock receptacle on your generator and see if there is a NEMA number on it.

The 295 amps is output not input. Still, I think you may be a little short on your generator. 5000 watts / 240 volts = 20.8 amps. Is the 5000 watts rated capacity or peak capacity?
 
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Old 02-13-09, 05:37 PM
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Originally Posted by Tolyn Ironhand View Post
Your welder has a NEMA 6-30P cord cap. Look at your twist lock receptacle on your generator and see if there is a NEMA number on it.

The 295 amps is output not input. Still, I think you may be a little short on your generator. 5000 watts / 240 volts = 20.8 amps. Is the 5000 watts rated capacity or peak capacity?
The receptacle says NEMA L14-20.

The generator is rated 6250 peak/5000 continuous. Sounds like it might be a little light for the welder on all but the very lowest setting?
 
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Old 02-13-09, 08:20 PM
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You can likely do thinner work.

You can make an adapter. Get an L14-20 plug, a couple feet 12/3 or 10/3 SO cord, and a NEMA 6-50 receptical and box, connecting X, Y, and ground from the plug to the hot and ground terminals on the 6-50 receptical.

I have a 5KW generator and an old Lincoln welder I could try sometime myself.
 
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Old 02-14-09, 03:57 PM
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Originally Posted by classicsat View Post

I have a 5KW generator and an old Lincoln welder I could try sometime myself.

It can be done only on lower setting { less than 90 amp setting } otherwise get a bigger unit to do it A 10 KW will handle it pretty nice without any issue with it and I have old super slow 6 KW diesel generator* and I ran welder from it.

Merci,Marc


* simuir with Lister Diesel engine big but run very slow only 600 rpm
 
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Old 02-14-09, 09:01 PM
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Thanks all. I'll get the parts and make my own adapter I guess, and I'll keep the welding with the current generator light.

Thanks again!
 
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