We have 2 48 module sensor classic racks. Whenever we have to replace to modules we would just pull them straight out while it was live (the manual recommended killing main power, but not required. It was entirely clear how to kill power so we never did)
When someone can to service our system and we talked to them they said ETC now says to kill power no matter what after someone died replacing a module with power on (it arced and killed them)
So we have a 300a 480v breaker on the same panel as the 2000a main coming in.
Do we need to get an arc flash hazard rating assessment and the appropriate PPE for the category?
Do we need an energized work permit?
Is there anything else we're supposed to do/should be aware of?
Also: at what point does this start to come into play? I assume you don't need this to flip a 120v 20a so at what point does this come into play?
When someone can to service our system and we talked to them they said ETC now says to kill power no matter what after someone died replacing a module with power on (it arced and killed them)
So we have a 300a 480v breaker on the same panel as the 2000a main coming in.
Do we need to get an arc flash hazard rating assessment and the appropriate PPE for the category?
Do we need an energized work permit?
Is there anything else we're supposed to do/should be aware of?
Also: at what point does this start to come into play? I assume you don't need this to flip a 120v 20a so at what point does this come into play?