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Author Topic: GFCI leakage testing  (Read 6278 times)

Mike Sokol

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Re: GFCI leakage testing
« Reply #40 on: June 10, 2014, 08:40:08 am »

The only reason I mention centering the coils on the clamp is that Klein mentions centering the wire in the clamps for max accuracy.  I know you aren't supposed to read instruction manuals, but its amazing how many times people asked me, "How did you know that?" when I fixed something in the factory!   In any case, I was reading to understand the variation I commonly notice when trying to check the amp draw on the motor.

As much as I preach about reading manuals, maybe I should read the manual. I'll try out during testing and see how much it changes the readings.

Stephen Swaffer

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Re: GFCI leakage testing
« Reply #41 on: June 10, 2014, 09:17:46 am »

Might also look into using an off the shelf CT, if you can find anything surplus.  A 500 amp CT would be 100:1 and a 50 amp would be 10:1.  Just use them backwards from their intended hook up.
Steve Swaffer
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