Any reason why the earths are terminated like that.
The socket earth bar is now acting as part of the earth continuity conducter.
Not wired like that with a single cpc....High integrity earthing
Any reason why the earths are terminated like that.
The socket earth bar is now acting as part of the earth continuity conducter.
Not wired like that with a single cpc....High integrity earthing
Basically the suggestion that the regular ring final cpc has been connected to the terminals separately because high integrity earthing is required doesn't wash. High integrity earthing is almost certainly not required, but if it is then a single 1.5mm² cpc won't do it, whether connected as per usual, or to both terminals as in this case.
Not in my mind.There maybe some confusion here
Not according to my copy of the 16th..a ring final circuit wired using 2.5mm²/1.5mm² PVCTWE cable can be used to form a circuit with 'high integrity' earth provided that each connection is separated - i.e. terminated under different screws.
Well I would if I had a copy of GN7, but the intention of 607 is surely what 607 actually says? And it doesn't say that IF a socket outlet final circuit needs high integrity earthing that a single 1.5mm² cpc is OK.The group of regulations that form section 607 (now 543) have been altered many times and some clarity may have been lost - refer to GN 7 for confirmation of the intention.
Superseded.Extract: 607-02-06 16ŧħ Edition Red Copy
And those requirements are?Extract: Current Text 16th Edition Brown Copy
607-03 Socket-outlet final circuits
607-03-01 For a final circuit with a number of socket-outlets or connection units intended to supply several items of equipment, where it is known or reasonably to be expected that the total protective conductor current in normal service will exceed 10 mA, the circuit shall be provided with a high integrity protective conductor connection complying with the requirements of Regulations 607-02 and 607-04.
Or we could look at what the requirements of Regulations 607-02 and 607-04 are.Well we could go on all day couldn't we.
I don't know. Does the emphasis change what the requirements of Regulations 607-02 and 607-04 are?Why do you think they decided to emphasis the requirement for spurs over sockets on the ring.
What did the engineers write for the requirements of Regulations 607-02 and 607-04?This text was written by engineers and that probably says it all
But what the red book said is irrelevant.the text from the red book was, IMO, much better - but then I would say that wouldn't I because I had a hand in writing it .
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