welder repair


Old 01-10-04, 03:25 PM
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Angry welder repair

I have a 250 amp welder it is worked by 220 volts, I have a problem with it, the thermostat did not work and I think what you call the secondary winding has melted, it is a piece of wire (it looks like soldering wire it is silver in color) one end of this wire was connect to the ground clamp connector and the other end to the electrode holder connector I have unwound all of it off the transformer (about 20 foot of it) it is about 3/16 " in diameter. it came off in pieces ,the welder still hummed when I turn it on before I unwound the wire and it would weld a little but didn't have proper power.
is there anything I can do to fix my welder ?
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Old 01-11-04, 06:21 AM
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Received 37 Votes on 35 Posts

No, the welder will have to be rewound by a shop that regularly does this type of work.

Even if you only see damage on the secondary winding the primary may have also taken a hit due to overloading of the secondary.
You would need a meg-ohmeter to check this.

If your machine is an inexpensive ac machine you may find it would be less costly to replace it.
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