What is a YAW?
Discuss Spur from Ring Final Circuit in the DIY Electrical Advice area at ElectriciansForums.net
lol, i like itSorry mate I couldn't resist It meant you are welcome, I only did it to torment you.
Because I didn't get a reply two days ago, as to if the proposed circuit would be safe, I destroyed the wallpaper and chased the walls and put in a ring without any spurs. Well got the cable in, not wired it up yet!!
I have seen the diagram in section 15 of the BYB, can anyone please explain to me why this circuit would not conform to BS7671
View attachment 34344
I have seen the diagram in section 15 of the BYB, can anyone please explain to me why this circuit would not conform to BS7671
what the **** is wrong with you ****s?
Get used to it. Every trade and profession has its own specific lingo. Just ask or Google if you don't know.Can people stop using acronym's please, what is a BYB?
I have seen the diagram in section 15 of the BYB, can anyone please explain to me why this circuit would not conform to BS7671
View attachment 34344
Reg 433.1.204
(i) Locate socket-outlets to provide reasonable sharing of the load around the ring.
Your diagram has all the spurs located on one part of the ring not shared around the ring.
Get used to it. Every trade and profession has its own specific lingo. Just ask or Google if you don't know.
Here's a few for you to look up before the next lesson. Hint: there's a list of abbreviations in the BYB.
DNO, ELV, SELV, RCBO, RCCB, FCU, BC, CPC, DB, GLS, IR, MFT, PIR, RFC, SES, SWA, UKPN
Because the junction box you have shown will not take all the cables (max of 4) you show 5
You can actually have a max of 8 cablesBecause the junction box you have shown will not take all the cables (max of 4) you show 5
You are correct we can't know what loads will be applied to what sockets but for sure feeding that many spurs into one point on the ring makes heavy loads on those spurs more likely to unbalance the ring. Therefore the design isn't suitable for ensuring a normal distribution of usage would create a balanced load.
That's my view on looking at the diagram and my interpretation of the regs based on it.
What last socket? You have a ring so no end as such and spurs? But in a normal ring (RFC Ring Final Circuit) any heavy load anywhere on the ring has the benefit of its supply coming both directions down the ring.
Tapping a lot of spurs from one point of the ring is concentrating loading on the ring to that point. A single double socket could draw 26A max from that point on the ring. Each spur can take up to 26A so with 2 you have 52A 3 65A 4 104A
The ring will be protected by an overload device but we don't know what that is and what its characteristics will be but its possible we could be drawing a lot of current via that one junction box.
Not bad. But worth looking them up. It's easy to guess at something that's nearly right, but not quite.I'll have a stab at them without looking in the BYB.
DNO = Distribution Network something
...
SWA = don't know armoured cable
UKPN
Not bad. But worth looking them up. It's easy to guess at something that's nearly right, but not quite.
Reply to Spur from Ring Final Circuit in the DIY Electrical Advice area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.