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How short circuit rating does determines the role of Busbar sizing?

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117 views asked Mar 7, 2015 by anonymous
bus bars are not affected by the fault current but the bracing in  busbars will
determine the short circuit rating of the bus.  Bus bracings are always a factor
in specifying the short circuit ratings of switchboard circuit breakers.

1 Answer

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Usually an electrical engineer estimates the system ampacity and short circuit rate and then requests the Busbar vendor to size the appropriate Busbar for that system based on the Busbar manufacturer’s specifications. Busbar should cover both the system ampacity and the short circuit rate.
answered Mar 14, 2015 by Matt Hall

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