Connecting t&e to swa

[blackbirdxx]

I'm planning to have a 5KW electric car charger installed at my house.

Unfortunately, the CU is on the other side of the house to where I want the charger installed so I'm in the process of feeding a 6mm t&e cable through the house from the CU to keep things neat. I'm presuming I need to change to 6mm SWA for the short run to the charger which is outside.
My question is:
How will I connect the t&e to the swa, I'm presuming by junction box? Can this box be on the outside of the house? I was intending to push the t&e through the outside wall in anticipation of the electrician connecting the swa in a box on the outside wall. The electrician will make the connection at the other end at the CU.
Firstly, is this acceptable practice, and if so, can someone suggest a suitable heavy duty outside junction box to connect the 6mm t&e to the swa.

Many thanks in anticipation.....

 

[ericmark]

Ask your electrician, likely you need the special cable which connects to consumer unit to measure house load.

 

[Adam_151]

Why does it need to be in SWA, is it going underground? If its just going externally, but not buried then Normally it would be done in something like NYY-J and would go right back to the board in that. Also note that a lot of EVSE units these days often have CTs that need to go on the tails (plus solar generation if fitted) so you need some way of wiring that back, theres cables that include a cat5e data cable as well as the mains cores for this purpose (marketed under brands such as "EV Ultra"), the SWA version is pretty easy to get hold of, there is a NYY-J version as well, but its not kept on the shelf as often. You could run a separate cable for that, but you'd have to make sure the sheath is suitable for outside use, and its more work/doens't look as neat

 

[Risteard]

Why does it need to be in SWA, is it going underground? If its just going externally, but not buried then Normally it would be done in something like NYY-J and would go right back to the board in that. Also note that a lot of EVSE units these days often have CTs that need to go on the tails (plus solar generation if fitted) so you need some way of wiring that back, theres cables that include a cat5e data cable as well as the mains cores for this purpose (marketed under brands such as "EV Ultra"), the SWA version is pretty easy to get hold of, there is a NYY-J version as well, but its not kept on the shelf as often. You could run a separate cable for that, but you'd have to make sure the sheath is suitable for outside use, and its more work/doens't look as neat

Bear in mind that combined power & data "EV" cable such as Eland's EV ProInstall is substantially more expensive than separate power and data cables. Non-armoured single phase ProInstall is around £10 per metre, and armoured around £20 per metre.

 

[Adam_151]

Bear in mind that combined power & data "EV" cable such as Eland's EV ProInstall is substantially more expensive than separate power and data cables. Non-armoured single phase ProInstall is around £10 per metre, and armoured around £20 per metre.

That is indeed the case, I think the specialist cables are somewhere around 85% more than just the power alone, of course you've got to add the extra ELV cost on top of the later, but thats not much for a few metres, so is a sharp rise, though £10 a metre does seem a bit on he high side, I was quoted just shy of £100 for 16m of non armoured 6mm EV ultra, I had change from £60 for the same length of NYY-J knowing I have a drum of duct grade cat5e, and I want two runs to the EVSE... one for the CTs and another one actually running data (It has facility to connect an ethernet cable, so dont see why I should rely on wifi)

 

[Risteard]

That is indeed the case, I think the specialist cables are somewhere around 85% more than just the power alone, of course you've got to add the extra ELV cost on top of the later, but thats not much for a few metres, so is a sharp rise, though £10 a metre does seem a bit on he high side, I was quoted just shy of £100 for 16m of non armoured 6mm EV ultra, I had change from £60 for the same length of NYY-J knowing I have a drum of duct grade cat5e, and I want two runs to the EVSE... one for the CTs and another one actually running data (It has facility to connect an ethernet cable, so dont see why I should rely on wifi)

Duct grade Cat5e is a good solution, and what I normally do. Have only used the ProInstall once as cost justification is practically impossible with it.

 

[SUNRAY]

That is indeed the case, I think the specialist cables are somewhere around 85% more than just the power alone, of course you've got to add the extra ELV cost on top of the later, but thats not much for a few metres, so is a sharp rise, though £10 a metre does seem a bit on he high side, I was quoted just shy of £100 for 16m of non armoured 6mm EV ultra, I had change from £60 for the same length of NYY-J knowing I have a drum of duct grade cat5e, and I want two runs to the EVSE... one for the CTs and another one actually running data (It has facility to connect an ethernet cable, so dont see why I should rely on wifi)

One has to be very careful with the CT wiring, it may not be running at ELV potential.

 

[SUNRAY]

Is there any reason the T&E can't run all the way to the EV point? maybe add some plastic trunking to tidy it, maybe directly into the back of the EV point. Speak with your electrician before you do anything, (s)he may have very different ideas to you and us.

One only has to look at some of the know nothings youtube crap.