ronmwilliams wrote:
I have been asked by my customer to provide individual labels on our low voltage switchgear compartments. Since all of the feeder breaker compartments have the same label, what about the metering compartments? Are the same arc flash hazards present at this compartment as the individual breaker compartment?
Yes and no, the hazard may be reduced in the metering compartment but there is no way to calculate that so you should label them the same if you did an analysis.
ronmwilliams wrote:
What about the possibility of arc flash hazards on opening a CT circuit?
CT's should never be open circuited, ever. But if they were, it would be a fizz. pop. smoke, kind of thing, not a big burn causing arc flash.