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Type: Posts; User: jim rozen

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  1. Good riggers are really boring to watch.

    Good riggers are really boring to watch.
  2. The converter got installed when we bought this...

    The converter got installed when we bought this rambling wreck of a house. The 30 year mortgage
    was up a few years ago, so that sort of dates it. I'm dated by the fact that I met my wife in the...
  3. The three traces are actually line-to-line. So...

    The three traces are actually line-to-line. So the utility power is just one trace on that scope screen shot. Call the two utility lines A and B. Call the manufactured leg C, for
    the sake of...
  4. Darn I've been doing it wrong for 30 years. ...

    Darn I've been doing it wrong for 30 years. Better put all those chips back on the stock.

    ;)
  5. Sure. A scope to measure the phase...

    Sure. A scope to measure the phase relationships. A voltmeter to measure voltage. And equal current flow? You need a meter that measures current. DC current, right?
    Oh. No. AC current - a...
  6. Yes. My comments above were directed to the...

    Yes. My comments above were directed to the line-to-line type, not the voltage transforming version. I've never seen those or worked with them.

    Again I suggest that inductive clamp-on meters,...
  7. Amp-clamp: inductive clamp-on meter. I've seen...

    Amp-clamp: inductive clamp-on meter. I've seen very strange effects with those. Put on the input lines of my converter, they read
    the sum of real and imaginary currents. Put on the...
  8. Most of the ones I've seen engergize only one...

    Most of the ones I've seen engergize only one winding. Avoid amp-clamp meters to diagnose setup issues.
  9. Quite probably the oriignal poster's as well. I...

    Quite probably the oriignal poster's as well. I keep my rotary because I have hardinge machines with two speed motors, and I also like plug reversing the other lathe to a stop
    while working. But...
  10. Probably the aircraft supplies were 400 cycle. ...

    Probably the aircraft supplies were 400 cycle. That's a whole 'nother thing. The converter shown above is in a tiny crawl space off my basement
    shop, wood door to seal it in (was an old root...
  11. You many be re-inventing the wheel. You want...

    You many be re-inventing the wheel. You want something that looks like utility 3 phase power, and you are willing to go to considerable lenghts to get it. To the
    point where you would install two...
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