I think I know the answer but wanted a 2nd opinion. I have a 4160 volt breaker cubical, the breaker has been removed and I have a project to upgrade the overcurrent relay. The shutters are closed and the PT fuses pulled. The back of the bus is still energized. The arc flash is a catogory 3 if I'm working on the breaker. If I'm doing the relay install do I still need Cat 3 gear? I say yes, even though its a pain in the butt to wire up relay with all that gear. I'm I over thinking things here?:blink: