Conservatory Sockets

[Springerflame]

Guys, a little advice if you please.

Customer has this conservatory (see picture) on top of the old coal shed (which is now a shop), attached to his flat.  He wants some sockets in the conservatory.

Ground floor is an estate agents, first floor is his house.  Distribution Boards are in the cellar, and in his flat.

Because the flat has been totally rewired and decorated throughout, he does not want any disturbance in the flat, which I can understand.

So... do I

Break into the ring, and spur off, running cable on the outside of the building (in either conduit or SWA)

or

Run out a whole new circuit in SWA from the DB

It's probably a dumb question, but I don't want to be falling foul of the regs.

Thanks in advance

Alan

 

[M107]

Extend the ring & go external...........swa, conduit, FP200 or if your able MI would look best.

 

[Andy™]

who owns the wall that you will be fixing the wiring to?

 

[Springerflame]

who owns the wall that you will be fixing the wiring to?

My customer owns the whole building and rents the ground floor to the estate agents.

 

[Murdoch]

What design load are you allowing for in the conservatory?

 

[Springerflame]

What design load are you allowing for in the conservatory?

1 double socket to run a 2Kw heater, and that is only going to be running till he gets the radiators fitted by the plumber.

 

[Jason Shawcross]

break into the ring and run external as long as the cable is rated for external use, no need for swa unless there's a higher chance of mechanical damage. then again it looks like your breaking into the ring near the boards anyway so if there's a spare way might aswell just add your own radial. depends what its like inside the cellar.

 

[Springerflame]

Guys, thanks.  Went and had a chat with the customer today, and he is happy for the work to be done.  SWA all the way   Now I just need to brush up on Billy's step by step SWA termination post

 

[Springerflame]

Life would be so much simpler without customers :facepalm:

Customer now wants multiple sockets, so extending the ring is the way forward.  Question now is:

Can I run both legs of the ring using a 4 core SWA using the armour as the CPC ?

 

[ProDave]

This is where conduit and singles would be a lot easier.
 

 

[Andy™]

Can I run both legs of the ring using a 4 core SWA using the armour as the CPC ?

testing & crossing earth with opposite line will be interesting...

 

[Lurch]

I'd probably still go for the radial option if you are going back to the CU/DB and use SWA.

 

[ProDave]

Lollipop circuit?
 

 

[Andy™]

Lollipop circuit?
 

i did think that too, but if he's using 4 core and keeping 2 per side rather than 2 in parallel then its a bit different

 

[Springerflame]

Lollipop circuit?
 

Hi Dave.  Never heard that term before, so had to google it.  

I am am pretty sure it is not a lollipop circuit.  

There red is a ring down at the bottom Window (see photo, bottom left).  My idea was to run a 4 core SWA in to the conservatory, to maintain the ring configuration, with the added benefit of having to run one cable rather that two.  My concern was whether or not I could use the armour as only cpc.

hopefully that makes some sense.  It does in my head, but lots of things make sense in my head, till I discuss it with others, and then see I'm missing a vital element (like a functioning brain).

Alan

 

[Andy™]

I am am pretty sure it is not a lollipop circuit. 

if you use the armour as the earth, then yes it is, but the line & neutral wont be

 

[ProDave]

Hi Dave.  Never heard that term before, so had to google it.

I am am pretty sure it is not a lollipop circuit.

There red is a ring down at the bottom Window (see photo, bottom left).  My idea was to run a 4 core SWA in to the conservatory, to maintain the ring configuration, with the added benefit of having to run one cable rather that two.  My concern was whether or not I could use the armour as only cpc.

hopefully that makes some sense.  It does in my head, but lots of things make sense in my head, till I discuss it with others, and then see I'm missing a vital element (like a functioning brain).

Alan

As Andy has said, you will have trouble doing the figure of 8 test with an (effectively) 5 core cable.

I was suggesting a THICKER 3 core cable to run a spur up to the conservatory from where a conventional ring circuit is created, hence "lollipop" but that needs it's own feed from the CU (I have never heard of a lollipop spurred from an existing ring, that would be "interesting") 
 

 

[Andy™]

(I have never heard of a lollipop spurred from an existing ring, that would be "interesting") 

well you could do it from a fused spur, but that would be pointless

 

[Blue Duck]

All sounds like it's getting a bit complicated, can you not run a new circuit providing everything is up to scratch? 

 

[Murdoch]

Life would be so much simpler without customers :facepalm:

Customer now wants multiple sockets, so extending the ring is the way forward.  Question now is:

Can I run both legs of the ring using a 4 core SWA using the armour as the CPC ?

For what? design load?