Spur from Ring Final Circuit

[Gigsy]

Big Yellow book. Latest version of bs7671

Ty, like I said I am doing an electricians course so I have a copy of the BYB

 

[GMES]

BYB is the Regs book " Big Yellow Book

 

[Gigsy]

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

 

[Gigsy]

BYB is the Regs book " Big Yellow Book

Thank you

 

[GMES]

YAW

 

[Gigsy]

YAW

What is a YAW?

 

[GMES]

Sorry mate I couldn't resist It meant you are welcome, I only did it to torment you.

 

[Gigsy]

Sorry mate I couldn't resist It meant you are welcome, I only did it to torment you.

lol, i like it

 

[andyb]

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!!

That looks like you're installing a new circuit now.

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

No one can possible tell you if that circuit complies with the current regs, it's just some squiggly lines.
What's the ocpd? is there rcd protection? what's it wired in? is all main bonding in place? and more.
And as stated already, you will need to test your work and issue the relevent c

 

[Pat H]

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

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.

 

[andyb]

what the **** is wrong with you ****s?

There is a jokes thread for these sort of posts you know.

 

[HandySparks]

Can people stop using acronym's please, what is a BYB?

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

 

[Barry White]

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

Because the junction box you have shown will not take all the cables (max of 4) you show 5

 

[Gigsy]

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.

You cannot possibly know if the load is balanced, It is impossible to work out, we do not know what appliances will be plugged in, so that regulation is irrelevant regarding this design.

The regulation states sockets, not spurs.


There are 3 sockets either side of the 2nd section of the ring. It is balanced.

 

[Pat H]

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.