rmcphearson
Hot Rolled
- Joined
- Jan 12, 2008
- Location
- Rochester, NY
We bought a used reel (cylindrical) grinder a few months ago and I just noticed 50VAC between the frame and the earth ground outlet from an unused receptical on the wall. This is a 110 single phase machine with some solid state circuitry. It works fine but it shocked me one time and it shocks the other user every time he touches it.
I ohmed the ground wire of the power cord and there is an open somewhere in the cord so I'm going to replace it. But my question is: Shoudn't I get NO voltage between the frame and earth ground with the ground wire open? I won't be able to replace it for a few days and I'm going to be until then.
I have heard some solid state circuits emit phantom voltage that goes away when a load is applied, but 50V? Enough to pop someone?
Roland
I ohmed the ground wire of the power cord and there is an open somewhere in the cord so I'm going to replace it. But my question is: Shoudn't I get NO voltage between the frame and earth ground with the ground wire open? I won't be able to replace it for a few days and I'm going to be until then.
I have heard some solid state circuits emit phantom voltage that goes away when a load is applied, but 50V? Enough to pop someone?
Roland