jorgepaz wrote:
If I have 2 Variable Frequency Drives fed from 2 different sources (protected by 2 different circuit breakers) and installed inside the same cabinet. what is the arc flash label that I should generate for this cabinet if the arc flash calculations for each VFD are different?
I prefer to use a single label that shows the worst case hazard which are usually the highest voltage present and the largest Arc Flash Incident Energy.
The actual specifics for each calculation are contained in the report, so they are available for use with energized work permits.