welding

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- 12th March 2009, 22:52
jessey

welding

Hello,

A friend of mine has two welders, a tig and a mig and wants to connect both grounds permanently to the welding table. Can anyone see any problems with this? Should these welders be isolated, possibly with a large diode?

Thanks
jessey
- 13th March 2009, 01:41
mackrackit

No problems. The machines are isolated with their transformers.
- 13th March 2009, 02:06
Archangel

Quote:

Originally Posted by mackrackit

No problems. The machines are isolated with their transformers.

And diodes would only allow 1 polarity welding, and you need to switch that, besides you usually weld aluminum with A/C.
- 14th March 2009, 05:27
jessey

Quote:

Originally Posted by mackrackit

No problems. The machines are isolated with their transformers.

Hi mackrackit,
The tig machine as far as I know dosn't have any transformers but I'm sure that the electronic circuitry that mimics the windings of a transformer must have some kind of isolation.

Quote:

Originally Posted by Joe S.

And diodes would only allow 1 polarity welding, and you need to switch that, besides you usually weld aluminum with A/C.

Yea I think your right about the diodes too Joe but I thought I'd ask a dumb question because I wasn't positive, better to be safe than sorry.

Thanks
jessey
- 14th March 2009, 06:27
Archangel

Quote:

Originally Posted by jessey

Yea I think your right about the diodes too Joe but I thought I'd ask a dumb question because I wasn't positive, better to be safe than sorry.

Thanks
jessey

Dumb questions, are the questions people don't ask. You just keep on askin' questions Jessey, you won't be the only one who learns from them.