As I said in the beginning, I'm not a welder. I am not completely familiar with all the in's and out's of Miller's equipment. As you pointed out (in question) the Miller 350 does not operate on 120V.
There is still 208V to ground regardless of neutral connection. It is simply a matter...
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I'm completely aware of how their service functions. My lack of familiarity is with Miller welders. My question was, if the 208V high leg could damage any control circuits that were expecting to see 120V.
It is connected to 3 phase. I only brought up the 240V single phase...Leave a comment:
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Well, I decided to put high leg on B phase, white in cord. I saw elsewhere that red is unused for single phase. Meaning that if it has any sensitivity to high leg on A, white must be acceptable. I can't see Miller making equipment that can't be connected to center tapped deltas via single phase....Leave a comment:
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Yeah, working now. They're closed, unless someone has a special number. To be more specific, their service is running ' hot ' at 125V/248V, and 211V high leg. I'm hoping the controls, if derived from 120V are being pulled from A phase. If they are 230V, I hope the welder handles the higher...Leave a comment:
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As long as I have the control board set for 230V, will welder care which leg is high leg?Leave a comment:
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Sorry. Disregard. I am not as familiar with Art. 630 than I should be. So I guess the actual question I have is will this welder operate properly connected via 30A non-fuse disconnect, #10 wireLast edited by unionsparky; 10-17-2014, 01:30 PM.Leave a comment:
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Electrical connection requirements
Hello all! I'm not a welder, but an electrician. I have a customer with a MillerMatic 350. We are to connect it to 3 phase 240V. The specs clearly state 30A draw and minimum conductor is #10. The personal at technical support just told me that I should install a 50A breaker and that a 30A safety...
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