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Old bit of conduit?
Lead gas installation pipe?
Or lead sheathed cable?
Old bit of conduit?
That does not specify only one spur per point.In the 14th Edition, it was a numbered regulation:
A38: For ring final sub-circuits complying with A30-33, the total number of spurs shall not exceed the total number of socket outlets and stationary appliances connected directly in the ring.
The definition of "Spur" in the 14th Edition is defined as "a branch cable connected to a ring circuit."
(So presumably that must have included both fused and unfused spurs).
In the 15th Edition, it was moved to the Appendices:
That does not specify only one spur per point.Appendix 5: The total number of fused spurs is unlimited, but the number of non-fused spurs does not exceed the total number of socket outlets and items of stationary equipment connected directly in the circuit.
The definition of "Spur" in the 15th Edition is defined as "a branch cable connected to a ring or radial final circuit."
In the 16th Edition, it was moved to the Appendices of the OSG:
The OSG is irrelevant.OSG Appendix 8: The total number of fused spurs is unlimited, but the number of non-fused spurs does not exceed the total number of socket outlets and items of stationary equipment connected directly in the circuit.
The definition of "Spur" in the 16th Edition is "a branch from a ring final circuit".
16th Edition AMD 2: 2004:
The OSG is irrelevant.OSG Appendix 8: The total number of fused spurs is unlimited, but the number of non-fused spurs should not exceed the total number of socket outlets and items of stationary equipment connected directly in the circuit.
The definition of "Spur" in the 16th AMD is unchanged from the 16th.
17th Edition 2001 AMD 1:
The OSG is irrelevant.OSG Appendix H: The total number of fused spurs is unlimited, but the number of non-fused spurs should not exceed the total number of socket outlets and items of stationary equipment connected directly in the circuit.
The definition of "Spur" in the 17th AMD is "a branch from a ring or radial final circuit".
Good question, I think that's the core of our debate.When it gets to the stage of being satisfactory (by better balance), would my spur also be acceptable?
Yes, but not always the case - but you have to work it out.I'm contending that keeping it ring like will gravitate all loads towards the centre of the ring, so given any arbitrary cable routing and sockets, the true ring will always be better distributed than a with with paralleled sections.
He has done it before (can't remember the numbers), and the ring was much more tolerant than you would at first think.Although you have to of course watch the loop impedence at the farthest point.
However we need Johnw2 to really get into the maths!
Yes.PS thanks secure spark for digging out the regs.
Yes,So we can spur as much as we like from one point of the ring as long as it's only single accessories on the end?
Yes, but as with John's calculation - a lot nearer than you would first think. Not 49:1 though.But we should be aware of ring balancing issues and avoid doing it close to the cu.
Just stop using ring finals - an awful lot of problems just go away then.
I can see pros and cons - but I'd go for an induction hob these days. Also, speaking as a landlord, an electric hob is one less gas appliance to pay for testing every year - not to mention that with electric, I can legally change it myself if needed; while with gas, I have to pay someone else to do it (and work to their availability).Gas is caveman compared to induction, and the sooner it goes away the better
Yeah, but we don't get many of those ... yet.Until a power cut
Started cutting the chases until my Henry hoover cut out (overheat - hopefully will start working again when cooled):
You've got to be right sometimes.BAS, I never thought it would happen, i agree with you !
It's a Henry or a Hoover, (both are manufacturers), but it can't be both.
That does not specify only one spur per point.
Yes, that's one point per spur, but not one spur per point.A40: ..........Not more than two socket outlets, or one twin socket outlet, or one stationary appliance, shall be fed from each non-fused spur.
The OSG is irrelevant.
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