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insulation

  1. E

    Insulation meter test. Is it OK?

    Hi everyone. I got a new cheap 9-v powered insulation meter (250-1000V), just to see how it works, and if it fits my needs. I never used one before. I did a couple of test, and I wanted to share them, and also ask if you think the results are to be expected. The meter works fine when measuring...
  2. S

    Why do electric motors burn out

    Hi all, Can anyone explain why some motors regularly burn out, I am thinking specifically about electric hand drills and to a lesser extent angle grinders. I know how they burn out- normally the insulating varnish on one of the coils breaks down and creates a short- I think that is right. If...

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