Probably a stupid thing, but knowing what is going to happen next during a job is one of my top priorities.
I've been doing a fair bit of 33kV Live Glove and Barrier work lately and I know to stop "dead" when asked by a fellow Line-Mechanic, what happens next.
Sure this sounds silly with voltages of 120-240-277-480, or does it?.
Know what it is you are working with guys, if you don't know, ask someone that does.
Sure you might sound like an idiot at the time, but the biggest idiot, gets hit with something he never expected.

Stay safe guys.

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Mike.