what are the normal steps you take to make sure a 480volt circuit is de-energized before working on it?
1st.Open the disconnect, breaker, etc. and lock it out.
2nd.test the circuit at the point you're working at with a reliable tester.
3rd. Still making sure your hand or other part of body does not come in contact with bare conducter, disconnect it and lightly scrape it across a grounded area with your face turned away.
4. If above steps pass, work on the circuit.
How do you do it? (Always looking for better and safer procedures)
