Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, about information on discrimination in commercial applications, is answered by SELECT:
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| A typical discrimination chart. |
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Question: Please could you advise me on the subject of discrimination. Is there a chart available that lays out the discrimination between different circuit breakers, ie: 50A MCB and a 32A RCCBO? Also, if one had a 100A consumer board, what would you protect it with in a commercial situation (for example, the consumer board would be feeding the office section of the warehouse)? Answer: Discrimination details of protective device(s) can be obtained directly from manufactures such as ABB, Eaton MEM, MK, Legrand etc. The consumer board (distribution board) in a commercial situation could be supplied via a 100A single- or three-phase circuit breaker (perhaps Type C) at the mains position within the main distribution board, and individual circuit protection would be by circuit breakers within the office unit.
To see many more Q & A in Voltimum UK's Experts Area, please click on the link: http://www.voltimum.co.uk/consult.php?universe=consult.index.questions
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