5. Before work may safely commence on a high voltage system, what must first be done after disconnection and isolation?

The circuit must be tested and proved dead first with an off-line tester, then grounded.
The circuit must be tested and proved dead first with a live-line tester, then grounded.
The circuit must be grounded first, then tested and proved dead with an off-line tester.
The circuit must be grounded first, then tested and proved dead with a live-line tester.

« PreviousSkipNext »

Show clarification Download PDF

Comments (0)

There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it