Zoomup:
A B20 at the origin and a B16 M.C.B. at the outbuilding garage unit should just about discriminate on overload, but not on a dead short or high earth current fault where they may operate together. Although if the house M.C.B. is warm and the outbuilding M.C.B is colder they may operate in a similar way under overload conditions, and trip off together.
Z.
Zoomup:
A B20 at the origin and a B16 M.C.B. at the outbuilding garage unit should just about discriminate on overload, but not on a dead short or high earth current fault where they may operate together. Although if the house M.C.B. is warm and the outbuilding M.C.B is colder they may operate in a similar way under overload conditions, and trip off together.
Z.
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