208 volt welder on 240 volt

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btuhack

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#21 · Nov 4, 2018

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Rob1969 said:

Hello all,
Not directly job related but feel that all the knowledge on this forum can easily answer this question. I have the opportunity to get an older working ac/dc 208 volt Lincoln stick welder for free. My small garage turned fab shop has 240 volt single phase in it. Will it work? Thanks, Rob

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Fixed it.

 

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Lahrs

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#22 · Nov 4, 2018

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btuhack said:

Fixed it.

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Lol. Ok, now I understand

Yes it will work. More than likely there will be different input voltage taps behind a cover. Check the manual or take the cover off and look for the terminals. Probably worth blowing all the dust out of it while ya there.

Edit: manual says there is different voltage taps. They pull alot of juice! More than 50 amps at 240v.

 

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dan wong

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#23 · Nov 4, 2018

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My reasoning; One cycle, 60HZ on a single phase 208VAC has the same timing period as 60Hz on 240VAC. only the amplitude is different, I think it will work fine.

 

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Rob1969

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Discussion starter · #24 · Nov 5, 2018

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208 only listed on the plate is what raised my concern to start with. Usually the data plates will say 240/208 on it. Thanks for everyone's input.

 

VTP99

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#25 · Nov 5, 2018 (Edited)

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Soooo, did you weld anything yet ?
What size breaker is it on ?
Oh, and I only found a Idealarc 250/250 listed as a Tig.
I'm gonna have ta look at the Lincoln site.

 

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servicefitter

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#26 · Nov 6, 2018

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Just wire it across two legs 208v just have to dial your amps up. Your welder will just derated.

 

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shellkamp

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#27 · Nov 6, 2018

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servicefitter said:

Just wire it across two legs 208v just have to dial your amps up. Your welder will just derated.

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You got it backwards - he's applying 240v to a 208 welder - he'd need to dial his amps down

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Gunslinger

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#28 · Nov 6, 2018

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EXACTLY^^^^^^^

 

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Olivero

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#29 · Nov 6, 2018

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Most welders have a variety of input voltage they accept, depending on its age, it might even be automatic.

My Miller DX200 will accept all the way up to 480V 3 phase, I just wire it straight to the panel and it turns on just like any other day, switch it back to 120V.

It's magic.

Either way I am sure these guys confusing the everliving christmas tree out of me know their electrical much better than me and I don't understand the phases and how they connect and so forth so I'm no good there. But I think you can get it to work, most welders are wired to work on higher voltages more so than lower voltage so I would think its convertable.

If you got questions on welding though, now that I can help with.

 

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Rob1969

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Discussion starter · #30 · Nov 8, 2018

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Didn't weld anything yet. I have to go where the welder is and disconnect it, bring it home, then run a 60 amp circuit over to where I'm going to set it up. I didn't want to go through all that just to find out it wouldn't work.