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  1. - 12th March 2009, 22:52 #1
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    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
  2. - 13th March 2009, 01:41 #2
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    No problems. The machines are isolated with their transformers.
    Dave
    Always wear safety glasses while programming.
  3. - 13th March 2009, 02:06 #3
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    Quote Originally Posted by mackrackit View Post
    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.
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  4. - 14th March 2009, 05:27 #4
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    Quote Originally Posted by mackrackit View Post
    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. View Post
    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
  5. - 14th March 2009, 06:27 #5
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    Quote Originally Posted by jessey View Post
    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.
    Last edited by Archangel; - 14th March 2009 at 06:29.
    If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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    Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
    .
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