I had an inspector question me about the interupt rating on a 200 amp main breaker today on a job I am finishing that another electrician started. Yes, it is a pain in the neck finishing somone elses work.
Anyway, I have a 300 amp underground feed to the meter pan, and 2 raceways out to a pair of 200 amp main breaker panels. The interupt rating on the MB is 22,000.
Is this sufficient?
Remember, I did not install the service, nor do I know enough about the formula for figuring the interupt rating. I have to assume that the rating is based on the largest ungrounded conducter from the POCO.
The AHJ also noted that he would prefer that I also strip back the insulation on all of my GEC's where they enter the panel for heat protection. Is he serious?
