Does this setup contravene any regs or is it ok?

[Michael J]

Sorry guys I am new to this having spent 40 years in Southern Africa.What does OP & lollipop mean?

 

[SparkyChick]

OP normally means original post or original poster.

Lollipop in this context is a circuit that starts as a single cable that supplies a ring final circuit. Useful if the ring final circuit is quite a distance from the distribution board (consumer unit).

They aren't that common (at least not in my experience) but they are allowed under the regulations.

 

[johnduffell]

Lollipop... aren't that common (at least not in my experience) but they are allowed under the regulations.

I wasn'sure if we had resolved that point, assuming we want to use 32a mcb and 2.5mm in the ring part.
"A final circuit arranged in the form of a ring and connected to a single point of supply"
So i would class the stem of the lollipop to be part of the final circuit, but i wouldn't consider it to be arranged as a ring. Also the point of supply of a circuit is the ocpd, not a point elsewhere on the circuit.

I do agree it's perfectly safe though!

 

[SparkyChick]

Let's clarify something... I was putting forward definitions in response to a query regarding the meaning of OP and lollipop.

So as definitions go, I'd say they are pretty accurate, so which parts don't you agree with and if you disagree, provide alternative definitions for the person who asked the question.

 

[johnduffell]

@SparkyChick maybe i didn't phrase it well, but i didn't have any objection to your definitions which were fine.
You also mentioned in your post that it is within the regs, which was the part i tried to quote and respond to.
It looks like the disagree rating came from @markythesparky who hasn't yet explained his view point.
As you can see i did provide an alternative which is that they may not comply with the regs, together with a possible justification for people to comment on.

 

[DPG]

I'm also interested in why markysparky disagreed with sparkychick's post re lollipop circuits.

 

[Deleted member 26818]

I’m sorry Spin, I cannot see the word ‘origin’ in App15 at all.

No the word ‘origin’ is not found in Appendix 15, though the word ‘start’ which is a synonym of ‘origin’ can be found.

 

[Deleted member 26818]

An OCPD cannot be the origin of a circuit, because BS7671 allows OCPDs to be omitted and also allows them to be positioned along the run of a conductor.

 

[static zap]

Sorry guys I am new to this having spent 40 years in Southern Africa.What does OP & lollipop mean?

Think of shape of a Lolipop
- Thick stick (single thick cable at cu)
--Circular -Ring on end of it .
(to be able to do any maintenance of ring -need access to this -JB)
..real point of origin of ring ..where any testing needs to be done ..

 

[DPG]

Disagree - of course an OCPD can be the origin of a circuit.

 

[MFS Electrical]

I like an assessor who knows his stuff.

There is, however, a difference between an assessor who knows his stuff and one who is just picking up on something for the sake of it. No regs breached technically compliant with the regs could be better but as the point has been raised earlier JB right up before the CU would make it the same circuit so why not from the same MCB?

 

[Deleted member 26818]

Disagree - of course an OCPD can be the origin of a circuit.

Ok where’s the OCPD at the origin of an installation?

 

[Ian1981]

A simple lighting circuit that we can all comprehend for clarity starts from the origin and is protected via its own OCPD and distributes out till the furthest point.
If a circuit didn’t start from the OCPD then you wouldn’t have separate circuits that are isolated by their own OCPD

 

[MFS Electrical]

Yes I know all about circuitry and tracing circuits what about three phase boards if for some reason someone connected one of the two cables into a breaker
on a different phase? We are not talking simple domestics now.

I fail to see the problem then as they would be two separate circuits again... but it’s a little beside the point as this was in a domestic setting.

 

[Deleted member 26818]

A simple lighting circuit that we can all comprehend for clarity starts from the origin and is protected via its own OCPD and distributes out till the furthest point.
If a circuit didn’t start from the OCPD then you wouldn’t have separate circuits

Well an FCU contains an OCPD (Fuse).
If I use an FCU to spur off from a circuit, does the fact that there is an OCPD at the origin of the spur, make the spur a separate circuit?