I was on a roof helping several other guys pull out a 50 hp a/c compressor.
I asked if the power was off.
Answer was Yes.
I asked if the fuses were pulled.
Answer was Yes.
I stuck an allen wrench in the terminal block and got 277v. thru one arm out the other arm to the panel I was leaning on.
I finally fell down and woke up with a helper trying to check on me.
I find out later the other service tech was a speed freak.
My lesson:
Never trust anyone with YOUR life.
Check power for yourself and lock it out with your key. If they don't like it screw 'um.
