Extend a Ring Main using SpliceLine

[Tabs101]

Hi,

I am having my internal kitchen/dining room wall removed and on either side there are plug sockets. I am going to remove the sockets and add one to part of the wall that will remain.

The only problem is the cables are not long enough. Am I OK to extend the cables using SpliceLine connectors and then place into a Wagobox? I have knocked holes into the kitchen ceiling to work on the cables. I have chipboard covering the floor upstairs making the cable joins inaccessible.

Please advise if this is the correct method for joining cables.

See the attached image. The joining cables will be moved well away from the copper pipe joints for safety.

Thanks in Advance.

 

[PrenticeBoyofDerry]

A few of questions:
Are extending the ring final circuit to extend the ring keeping the integrity of it.Or just extending as a spur?
Are the joints you using compliant with that of an MF standard?
Can you as an alternative either extend the RFC from an exiting outlet or install one where the joint is going o be made?
Are you are aware of the requirements of cable routing and RCD protection?

 

[Tabs101]

Thanks for the reply.

1) This will not be a spur but an extension of cable on the main ring. I currently have two sockets and will be moving to one
2) I believe SpliceLine connectors are the new method of connecting cables rather crimping so assume they are MF standard
3) Not really
4) Yes, it will be protected by a 32amp RCD in the fuse box

I have attached an image of the current wiring and what I am proposing. This is a view from the side

 

[PrenticeBoyofDerry]

Do you have the BS of the connector you intend to use or a link to it? As this will confirm whether it does comply to BS 5733-MF.
Alternatively you could use the 222 and 773 Wago Series connectors, as I believe they do comply to the standards required.
I assume you mean the circuit is protected by 30mA RCD?
Also as the joint is going in to the wall and you are removing/relocating existing socket outlets, the existing and the new cable must still stay/be installed in the permitted safe zones.

//www.diynot.com/wiki/Electrics:walls

Also be aware that the extending of the circuit does still require a degree of inspection and testing and at least a minor works certificate to be issued.

 

[Tabs101]

The classification of the SpliceLine connector is BS 7671:2008. See the following link:

http://uk.rs-online.com/web/p/crimp-butt-splice-terminals/7643370/

The joint will actually be in the ceiling between the joists but yes the new cables will be in a permitted safe zone.

Oh and yes I meant it will be protected by 30mA RCD.

 

[PrenticeBoyofDerry]

Regrettably the product standard does not have the BS5733 mark, so I personally would not use it as an MF connector.

 

[Tabs101]

But the SpliceLine is classified as Maintenance Free under BS 7671, which states:

Every connection shall be accessible for inspection, testing and maintenance except for the following:
(i) A joint designed to be buried in the ground
(ii) A compound filled or encapsulated joint
(iii) A connection between a cold tail and the heating element as in ceiling heating, floor heating or a trace heating system
(iv) A joint made by welding, soldering, brazing or appropriate compression tool
(v) Joints or connections made in equipment by the manufacturer of the product and not intended to be inspected or maintained
(vi) Equipment complying with BS 5733 for maintenance-free accessory and marked with the symbol and installed in accordance with the manufacturer’s instructions.

So No. 2 and No. 4 should cover my proposal right?
The SpliceLine is a type of compression fitting (you cannot pull the tails out for nothing) and the joints will be encapsulated.

If not then can I use Maintenance Free junction boxes to extend the cables?

 

[skenk]

It's not compound-filled, encapsulated or made by soldering, welding, brazing or using a compression tools so what makes you think ii and iv are relevant?

As you have already been told, you need MF connectors to BS5733 (although the "Ideal product expert" in the Q&A here: http://www.screwfix.com/p/ideal-spliceline-in-line-wire-connectors-pack-of-10/42201 seems to think they can be buried if using a suitable enclosure

 

[PrenticeBoyofDerry]

So No. 2 and No. 4 should cover my proposal right?
The SpliceLine is a type of compression fitting (you cannot pull the tails out for nothing) and the joints will be encapsulated.

Your jointing method is neither, so no it does not serve your purpose.
This is the clause you should be looking

(vi) Equipment complying with BS 5733 for maintenance-free accessory and marked with the symbol and installed in accordance with the manufacturer’s instructions.

which the manufacturer's of your joint do not claim.

If not then can I use Maintenance Free junction boxes to extend the cables?

I have already informed you on what terminals can be used for your Wago box!!!!

 

[Iggifer]

Or just use these

https://www.tlc-direct.co.uk/Products/ASJ803.html

 

[ban-all-sheds]

The classification of the SpliceLine connector is BS 7671:2008.

BS 7671 is the Wiring Regulations.

Which you really, really, really, REALLY ought to know.

 

[stillp]

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[stillp]

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[stillp]

The classification of the SpliceLine connector is BS 7671:2008.

BS 7671 is the Wiring Regulations.

Which you really, really, really, REALLY ought to know.

As should the manufacturer of the SpliceLine, as well as RS Components!