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I once saw a YouTube video made from an industrial accident investigation about a fatal electrical flash-over where a voltage too high was measured with a meter. The guy was trouble shooting a large motor controller, his meter was rated to 600 V, most of the controllers in the room had 440 V on them but the one he wanted to check was, unknown to him, 10,000 V. Someone saw him running out of the room after the flash-over, the only piece of clothes unburnt on him was his belt!
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