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If the PFC tested at the board is higher than the rated MCB then they need changing. The BS88 is acted at 80ka so no issue there.

I am interested in other members answers as I am unsure but if it is a UPS that is feeding the emergency lighting then isn't this from batteries? Would there be any fault current from batteries?

[QUOTE="Essex1, post: 399085, member: 25368"] If the PFC tested at the board is higher than the rated MCB then they need changing. The BS88 is acted at 80ka so no issue there. I am interested in other members answers as I am unsure but if it is a UPS that is feeding the emergency lighting then isn't this from batteries? Would there be any fault current from batteries? [/QUOTE]

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