How to extend an outdoor armoured cable (Ed.)

[Randomjock]

I have a socket outside my house that's ran from inside its a 10mm armoured cable , can I run off the socket I have and run a 6mm twin and earth cable round a corner and into my basement to run a freezer I would be using a 6mm twin and earth cable that's all that would be ran from it minus a LED light is this something I can do I'd rather get the electrician in and use cable I already have the distance is only around 5m and I have 25m left of cable

 

[Murdochcat]

Twin and Earth isn’t suitable for use outside

 

[davelx]

And when you say the SWA is "10mm" exactly which dimension are you referring to?

 

[Taylortwocities]

I have a socket outside my house that's ran from inside its a 10mm armoured cable

Is this connected to the supply directly as a spur from one of the house ring final circuits, or is there an internal fused connection unit that the armoured cable connects to?

 

[ericmark]

The supply will have overload protection, this does not have to be at the origin, but the aim is to arrange things so any overload will open the protection device, be that a fuse, MCB, or RCBO. The cross sectional area of the cable is not what we really need, it is the current carrying capacity, this is linked to CSA but also the installation method can alter the current carrying capacity.

However in the main we will run a set size of cable (CSA) from the overload device (MCB etc) until it gets to next overload device (fuse etc) and you are talking about going from 10 mm² to 6 mm², which rings alarm bells.

What is run from it does not really matter, that can change over the years, it is down to when under fault conditions will is fail safe?

 

[ebee]

I wonder what the 10mm refers to? I have come across folks who measure the the cable width/breadth/diameter and refer to that as the size and do not understand that electricians refer to the cross sectional area of the conductor itself which bears no relationship with insulation/sheathing/armouring etc.

A picture or sketch of the set up would be nice.

 

[SUNRAY]

I came across this on another forum once before, it took some finding but this was the opening paragraph;

Just like on here sometimes it ran to many posts before we were able to get past the detritus of the useless and irrelevant replies (during which OP had followed the advice to purchase brass SWA fittings) to establish and that the cable concerned was 3 core 6mm² NYY and he originally had 20mm stuffing glands which didn't accept the 16mm diameter cable.

 

[davelx]

I wonder what the 10mm refers to? I have come across folks who measure the the cable width/breadth/diameter and refer to that as the size and do not understand that electricians refer to the cross sectional area of the conductor itself which bears no relationship with insulation/sheathing/armouring etc.

I asked that question in post #3 - no response so far.

 

[SUNRAY]

I asked that question in post #3 - no response so far.

I think most have noticed but...

 

[ebee]

I asked that question in post #3 - no response so far.

Yes I did notice that. That is why I elaborated just to make it a bit clearer to the OP. It`s a bit same sort of with copper pipes (OK then tubes) if you doing imperial or mm they measure ID or OD and the size conversions are not exact, Most trades involved with them have a reasonable grasp quite often but outside the trade most folk do not always realise.

Mind you a bloke in the building trade at his own house had a washing machine and a tumble dryer running off a length of SWA as a spur from the ring - I suggested at some distance that it looked a bit small but he replied that its 10mm (I think that's what he said) anyway I took a peek at it and it was 1.5mm 3 core SWA.