Testing into open breaker with line energized.

[tcoupekyle]

Reading Megger/AVO's "A Stitch in Time", they say to not test energized equipment and one side of a switch, breaker, etc being energized and you testing the other side, that should still be considered energized equipment. I imagine that the user manual for the test equipment being used probably also advises against testing into hot equipment. If the load side fuses, bus, cables, etc of said "line hot" equipment was completely disconnected and electrically isolated from the "line hot" equipment in addition to the control device itself being open and locked out, then I would consider that an electrically-safe work condition which is absolutely positively addressed in NFPA70E. Otherwise, it's a NO!

That's how I called it.
If it's half energized it's still energized I think is what I told the customer

[cnowak]

That's how I called it.
If it's half energized it's still energized I think is what I told the customer

Couldn't agree more. I've been in the field for a few years and have been asked to test cables running into a breaker with the line side hot. Since I've entered this field of work I've always been told never test into hot equipment and have had to tell the customers the same thing.