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What is the termination temperature for RJ frame breaker , 2500A frame main breaker 1600A trip applied in a switchboard as a feeder circuit breaker?

NEC 110-14(c) Temperature Limitations. Paraphrased; the termination temperature in electrical equipment is 75 degrees C unless the equipment is marked for higher termination temperature. Even though the lugs are not landed directly on the RJF breaker, but on the buss structure in the UL891 Switchboard, the termination temperature of electrical connections is still 75 degrees C.

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