Sumer house -sub board Zs!? | Page 2 | on ElectriciansForums

Discuss Sumer house -sub board Zs!? in the UK Electrical Forum area at ElectriciansForums.net

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hello
i would like to know maximum zs at the sub board !
i used the house otside socket feed to summer house!
i connected one outdoor fused spur under the socket ,with 13a fuse!and that feed small fuseboard in the summer house!
1-6a lighting
1-10a socket circuit!
i took the zs reading at the socket (0,45 ohm)
in this case how much is the maximum zs at the S.H.distribution board allowed,permitted?
thank you!
 
Sounds like a very poor circuit design with needless expense on materials. The max Permitted Zs would be the OCPD at the source of the supplying circuit, 16 amp MCB.

Pointless having a DB in the outbuilding if it's been fed from a final circuit.
 

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