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Hey Everyone.
Whats your thoughts on using a 3core & earth to run x 2 final circuits? I have x1 three core & earth feeding contactors for emergency lighting. L1- fed from a 6A mcb is feeding a switched pole on a NO contactor, L2- fed from a different 6A mcb also feeding a pole on a NO contactor.
At the outgoing side of the contactor is x2 em lighting circuits, done in 1 5mm T&E. Now when calculating max Zs Im essentially using the same CPC for both circuits ( in the 3 core cable), which I don't like. Is it deemed safe/ normal practice to allow these essentially 2 circuits to share the same CPC & N. The DB is very close to the contactor board, so Im planning to run x2 new 1.5mm feeds to the contactors to gain true Zs readings.
Whats your thoughts on using a 3core & earth to run x 2 final circuits? I have x1 three core & earth feeding contactors for emergency lighting. L1- fed from a 6A mcb is feeding a switched pole on a NO contactor, L2- fed from a different 6A mcb also feeding a pole on a NO contactor.
At the outgoing side of the contactor is x2 em lighting circuits, done in 1 5mm T&E. Now when calculating max Zs Im essentially using the same CPC for both circuits ( in the 3 core cable), which I don't like. Is it deemed safe/ normal practice to allow these essentially 2 circuits to share the same CPC & N. The DB is very close to the contactor board, so Im planning to run x2 new 1.5mm feeds to the contactors to gain true Zs readings.
