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I need to replace around 20 non maintained bulkheads (like for like). The wiring in the building is around 20 years old, and there are 5 lighting circuits, and then a dedicated circuit for emergency lighting. The building is split into multiple areas that have different uses, the issue I have with replacing the fittings like-for-like (non maintained) is if the local lighting in one area of the building fails then the emergency lighting won't activate in that area- unless there is a power cut to the complete building (or phase that the emergency lighting circuit is fed from).
They don't want the original non maintained fittings replaced with maintained (electricity bill, cost of replacing tubes.. etc etc).
What do I need or what could I do (with relays?) at the consumer unit to cause the supply to the em lighting circuit to fail if any other lighting circuit fails? Would this comply or would it not be ideal, the building will be closed for another few months so perhaps it's best to suggest rewiring the emergency lighting from local circuits.
A 30mA RCD is used as a main switch for the full lot (1x three phase board). I'm not too happy about leaving that as it is either, and I'm having trouble getting MCBs for it (Terasaki, a brand I've never heard of)!
I'd appreciate anyones educated opinions
They don't want the original non maintained fittings replaced with maintained (electricity bill, cost of replacing tubes.. etc etc).
What do I need or what could I do (with relays?) at the consumer unit to cause the supply to the em lighting circuit to fail if any other lighting circuit fails? Would this comply or would it not be ideal, the building will be closed for another few months so perhaps it's best to suggest rewiring the emergency lighting from local circuits.
A 30mA RCD is used as a main switch for the full lot (1x three phase board). I'm not too happy about leaving that as it is either, and I'm having trouble getting MCBs for it (Terasaki, a brand I've never heard of)!
I'd appreciate anyones educated opinions