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AIC rating question - Electrician Talk In determining if this breaker has the proper AIC rating do we look at the AIC at the load (15 4 kA) or the available AIC at the panel (25 4 kA)? It seems like you would use the available AIC (25 4 kA) at the panel to size the breaker if you didn't have control over the branch circuit wiring
Calculating AIC rating of Panel - Electrician Talk Residential does not vary much Because the POCO engineers design the distribution to keep the AIC's low or some would say with in reason Commercial and Industrial can be all over the place When I started in the '70's AIC was not even a consideration Breakers did not even have the rating on them The first rating I remember seeing was 5000 AIC
AIC. what to do? - Electrician Talk So, I'm here in LA and all i need to do is add a new panel off of a distribution from an existing spare 200amp breaker I haven't seen the job yet, this is all on paper But, my question is, shouldn't the AIC rating of the new panel and breakers be engineered? I've looked up some ways to
panel AIC rating? - Electrician Talk The AIC rating of the fuses has little or nothing to do with it, it is the LET THROUGH current of a current limiting fuse design, the amps that get past the fuse under fault conditions, that matters So a fuse that is not current limiting, but rated 25kAIC, would be meaningless as far as the down stream equipment protection
AIC Breaker Ratings - Electrician Talk Here's a sample AIC calculation sheet from a POCO It was to the weatherhead and the calculation to the main disconnect needs to be calculated This is an excel spreadsheet AIC calculator from MH Play with and see what you can do View attachment 17693
AIC Series Rating | Page 2 | Electrician Talk Adding a higher AIC rated fuse upstream generally doesn't change the available fault current The time curves are used for selective coordination Selective coordination ensures that a fault only opens the closest fuse You want this so that your whole plant electricity doesn't go down when you short out one lightbulb socket
AIC ratings relative to distance - Electrician Talk The total increase in wire length would be approximately 25 feet or less The service is 200,000 AIC rated equipment, feeding the ATS normal with 500's at a total wire length of about 70 feet Questions: 1 What levels of AIC ratings are there on equipment? Is the next 'level' 150,000? 100,000? 2 What is the relationship between distance and
Short Circuit Current Rating(SCCR) of meter - Electrician Talk The AIC of your breakers is the interrupt rating 22k amps is just the next step above 10k amps You need to know what the available fault current is from the utility in order to determine whether you can use that 18k SCCR rating with a breaker
Is AIC Rating the same as AIR? - Electrician Talk AIC changes depending on the voltage involved because voltage plays a large part in maintaining an arc within the breaker A lower voltage means the arc will be extinguished more quickly, which means that the amount of current allowed to flow through the arc is higher, because it's still less overall power that the breaker has to tolerate