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Zone 1.

After an N.I.C.E.I.C E.I.C.R. report I attended to see about some remedial work.

The house is TN-S supplied with a Ze of 0.64 Ohms. The main earthing conductor just pulled out when I tugged on it in the presence of the homeowner. Not good.

Anyway, in the bathroom is a cast iron bath tub. Immediately above it is a chrome finish spot light bar, reported to be suitable for zone 1 use. I do not know if it is a Class 1 or 2 fitting at this stage, but the owner will give me details later on.

A person standing in the bath tub can easily touch the metal luminaire as it is very low, mounted on a wooden beam.

Would you bond it to the bath tub pipework?

Parents

0 Chris Pearson over 4 years ago

I am a little confused regarding the earthing arrangement. If TN, how is the MET connected to the service cable?
Depending upon the service head, you wouldn't know whether the N-E link has been made inside it, but if there is a link (there or nearby) PSSC and PEFC should be very similar.
I agree that a Ze of < 1 ohm is unlikely to be TT.
It seems that not all rural supplies follow the rules.
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0 Chris Pearson over 4 years ago

I am a little confused regarding the earthing arrangement. If TN, how is the MET connected to the service cable?
Depending upon the service head, you wouldn't know whether the N-E link has been made inside it, but if there is a link (there or nearby) PSSC and PEFC should be very similar.
I agree that a Ze of < 1 ohm is unlikely to be TT.
It seems that not all rural supplies follow the rules.
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Zone 1.

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