What struck me about this report was that the victim appeared to be a very conscientious and careful person. He took the 'as built' wiring diagram home to determine the correct circuit breaker, turned the light switch off and taped it, etc. He was trying to lock and tag out the circuit, he just wasn't trained correctly to test the circuit before working on it. He didn't use a pen tester or meter to check for voltage or use insulated tools, both common mistakes from untrained persons. This should be required reading for new maintenance workers who are frequently required to do similar tasks (change broken light bulbs).
