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Thread: Three phase welder running of single phase

  1. #1
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    Three phase welder running of single phase

    Any one have any real world experience running a three phase welder of single phase.?

  2. #2
    Almost literate. veitnamcam's Avatar
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    Some of the old Youngs could be wired to run on either but dont know of any modern welders that do it.
    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

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    Yep the youngs would do it, B, and Cs I think, sold one a few months back
    Boom, cough,cough,cough

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    Quote Originally Posted by Maca49 View Post
    Yep the youngs would do it, B, and Cs I think, sold one a few months back
    And my old Mitch welder as well.

    A lot of the switch modes can do it too.
    There are only three types of people in this world. Those that can count, and those that can't!

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    yes we had 2x 3phase 200A tigs which we had single phase adapater leads for when working on site, not sure if its some sort of electrickery going on with the adapters, thought it was just a 3ph plug on one end with single phase wiring and plug on the other
    #BallisticFists

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    Ok I have 260 amp single phase that struggles on the larger repairs and would like to run 350 amps and still get that out put out of single phase? Not really looking to rewire one for lower output or go to a welder generator if I can help it.

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    Almost literate. veitnamcam's Avatar
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    Some sparky will tell us I am sure but that doesnt sound safe.
    We trialed a 200amp tig that was drawing rtidiculous amps out of the wall, extension leads go all hot and floppy etc, we went 300 amp 3 phase rather than burn a building down.
    puku, gadgetman, mucko and 1 others like this.
    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

  8. #8
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    Your 260 amp welder is probably lacking input current, upgrading to a bigger single phase welder wont help that, you will need to re wire your building with probably 16mm cables to feed the welder.

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    Anything over 160 amps will struggle on a single phase line, unless the building is wired for it.

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    260 amp on single phase is as big as it gets the shed has all the large cables and any extension lead is a $300 job so i dont think i struggle with current.Oversize earth lead and hand piece i just need a bigger welder

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    And the next bigger welder is three phase.I have seen it done on lathes etc not sure if it is feasible on what the welders draw.

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    Can you not put 3 phase in?
    Sounds like a f up waiting to happen with single
    Melted plug sockets and ext cables with far less power

  13. #13
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    Quote Originally Posted by Markgibsonr25 View Post
    260 amp on single phase is as big as it gets the shed has all the large cables and any extension lead is a $300 job so i dont think i struggle with current.Oversize earth lead and hand piece i just need a bigger welder
    What sort of plug does it use? How many amp? What size cables is the shed wired with, will need to be 16mm cables to handle that current. Unless you extension cables are also 16mm then they are too small. Put a multi meter on the neutral and active at the welder and see what the volts drop down to when you are welding.

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    Quote Originally Posted by Markgibsonr25 View Post
    And the next bigger welder is three phase.I have seen it done on lathes etc not sure if it is feasible on what the welders draw.
    You need a phase converter to convert the single phase to 3 phases, but if you dont have enough current to run a single phase, you wont be able to run a bigger 3 phase welder.

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    Generally you can't run a welder off the electronic converters, you need a rotary converter like what the fella in Cambridge produces. But be aware, to get any sort of grunt out of it for a decent welder you are looking at an input current of around the 20-30A which on 230v single phase is like, the cost of a round trip ticket to the moon...

    A decent 3-phase welder is looking at 25A input on all phases, which is why most run off the 30-32A rated type sockets. I've taken out a couple of the 16A three-phase sockets on welders, they are really only for little motors and small machines.

    No real answer for you there short of a decent rewiring job. Might seriously be cheaper looking out for a good 3-phase genset and running whatever you want that way!

 

 

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