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New way to wire lighting circuits

Former Community Member
Former Community Member
Hello,


Does anyone know anything about a new rule to wire lighting circuits so that they have a live, neutral and earth running the full length of the circuit? I heard something about this last year but cannot pinpoint it in the 18th Edition Regs.


Apparently, a light now has to be wired so that the neutral running to the switch is USED as a neutral, and not as a switched live.


Anyone else heard of this?


Thanks,


David
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    The obvious problem is that one faulty electrical appliance will noy only take out all the sockets on that ring, but take out all the lights at the same time. That's not great at night.

    That's one of the unfortunate side-effects of the current fashion for MCBs and RCDs at the CU. Under the original design 13A fuses discriminated very nicely with 30A CU fuses, which in turn discriminated very nicely with 60A supplier's fuses. Other than gross overload the only way you could blow the 30A fuses was a fault on the ring itself. Appliance faults could only disconnect the faulty appliance.

       - Andy.
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  • 0
    The obvious problem is that one faulty electrical appliance will noy only take out all the sockets on that ring, but take out all the lights at the same time. That's not great at night.

    That's one of the unfortunate side-effects of the current fashion for MCBs and RCDs at the CU. Under the original design 13A fuses discriminated very nicely with 30A CU fuses, which in turn discriminated very nicely with 60A supplier's fuses. Other than gross overload the only way you could blow the 30A fuses was a fault on the ring itself. Appliance faults could only disconnect the faulty appliance.

       - Andy.
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