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Fused neutrals...

geov
Attended a no supply at a commercial site today. L/lord is responsible for the risers and laterals supplying a total of six offices ( three floors x 2 offices). The conductors and switchgear appear to be original to the building ceramic fuseways with asbestos flash pads, but fused on the neutrals too. Risers and laterals are vir. Now, to get the one office back on supply I’ll have to run new laterals, but it means using the fused neutral until the landlord agrees to switchgear upgrade.

So question is, would you agree to carry out the “temporary” connection with a fused neutral in the equation?

TIA
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    Reluctantly, yes I would re use an existing fused neutral. I would insert in the neutral fuse way a fuse one size larger than that used in the phase conductor. This minimises the risk of the neutral fuse blowing and the phase fuse remaining intact. I would not use a solid link or a grossly oversized fuse, in order to minimise the degree of over-fusing if some muppet re-uses the neutral fuse in the live side of the circuit.

    Advise client in writing that further works are required urgently.
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  • 0
    Reluctantly, yes I would re use an existing fused neutral. I would insert in the neutral fuse way a fuse one size larger than that used in the phase conductor. This minimises the risk of the neutral fuse blowing and the phase fuse remaining intact. I would not use a solid link or a grossly oversized fuse, in order to minimise the degree of over-fusing if some muppet re-uses the neutral fuse in the live side of the circuit.

    Advise client in writing that further works are required urgently.
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