RCD test on all circuits or just once for each RCD?

Not here either
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One shilling and six pence....!
 
but you'd finished your apprenticeship by then, so you must have been pulling in the best part of thirty bob.
 
... 14th regs ... REG B119 allowed Earthed concentric wiring, but in them days the ESR regs were from 1937 ...... Anyway the reg allowed 3 options one of which .... "Where the supply undertaking concerned has been specifically authorised in respect of the installation in question by the secretary of state for energy or the secretary of state for Scotland (or, outside England,wales and Scotland by the corresponding authority) to permit additional connections of the neutral conductor to earth"
Thanks. That therefore fully explains what Adam described and answers the questions I asked him.

Kind Regards, John
 
Maybe the upshot is that the DNO must disconnect you/refuse to connect you if you do that?
As you say, maybe, but ... (a) goodness knows how they would be expected to discover that a consumer had done that subsequent to their connecting a supply, and (b) if that is what the legislation intends, then should it not say so, rather than seemingly applying requirements/restrictions to people who are seemingly outside of the scope of the piece of legislation?

Kind Regards, John
 
As a matter of interest, who would "grant this special permission", and why?

The Minister of Fuel and Power.

These images - extract from a BICC book on installing mineral insulated cables, and the regulation in the 13th edition that it refers to.

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The Minister of Fuel and Power. .... These images - extract from a BICC book on installing mineral insulated cables, and the regulation in the 13th edition that it refers to.
Thanks.

Happy New Year - I'll respond properly later!

Kind Regards, John
 
The Minister of Fuel and Power. ... These images - extract from a BICC book on installing mineral insulated cables, and the regulation in the 13th edition that it refers to.
Interesting.

Did the 13th ed. (or any other ed.) of the Wiring Regs have any more legal status/'power' than does BS7671?

If not, if it was necessary for the Minister of Fuel and Power to "grant special permission" for this practice, there presumably must have been some legislation which otherwise would have outlawed that practice. What was that legislation?- perhaps the forerunner of ESQCR, which I think first showed its face in 1988? (was that forerunner "ESR"?)

Kind Regards, John
 
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