rookie4now
Senior Member
I consider myself to be pretty safe, but maybe I'm wrong about this. We have to change a breaker (HKD65K 400A 3-Pole). I was going to shut down the breaker we are changing, and change it. My boss says I'm crazy to change that breaker with the panel live and that we shoud shut down the main feeing the bldg to kill our panel, then change the breaker.
I agree it would be better to kill the power, but it would kill power to 20 tenants in a mall. I figure that's why the management calls a trained professional who isn't going to kill themselves in a panel.
Is it common practice to kill the main first? I don't want to be unsafe, but I don't know why he feels this is risky. Obviously I'll do it however he want is done, I'm just curious what others do.
Thanks.
I agree it would be better to kill the power, but it would kill power to 20 tenants in a mall. I figure that's why the management calls a trained professional who isn't going to kill themselves in a panel.
Is it common practice to kill the main first? I don't want to be unsafe, but I don't know why he feels this is risky. Obviously I'll do it however he want is done, I'm just curious what others do.
Thanks.