Somebody want to tell me how to lock out a 1930s Pringle switch rated 800 amps feeding an air handling motor control center. It was opened and tagged out but the drywall guys screw gun stopped working so he made his way to the electric room and closed the tagged switch. He must have thought it was dammed nice of us to label the switch he needed to close. I chased that bastard for ten blocks and he flat out ran me. I nearly had him twice but power by fear cut in and he put on some extra speed. Maybe it was the conduit bender I was carrying that slowed me down. I have to say that I'm glad he out ran me or I would be doing hard time. While I was chasing him someone else broke every piece of glass and exposed plastic on his car. None of that kept us from first calling the ambulance for our badly burned brother electrician and several guys were rendering aid while I went to secure the circuit. When I found that drywall guy still throwing breakers I just lost it. He was closing everything that was tagged out.
Ever since that incident I fault out any circuit I'm working on once I have locked it out and tagged it out.
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Tom Horne