Another random question

[hightower]

Pretty sure you all know by now I like to dream up random scenarios.

So let's say running SWA to an out building, but the consumer unit is a tricky run that would make it difficult to get SWA all the way to it. Would you then run T+E say from the consumer unit, through the external wall to some form of IP rated junction box, and then join the SWA in this external junction box?

 

[Pete999]

Don't see why not

 

[Simonslimline]

Pretty sure you all know by now I like to dream up random scenarios.

So let's say running SWA to an out building, but the consumer unit is a tricky run that would make it difficult to get SWA all the way to it. Would you then run T+E say from the consumer unit, through the external wall to some form of IP rated junction box, and then join the SWA in this external junction box?

Best to always avoid joints in a circuit where possible. What is making it so tricky?

 

[hightower]

Best to always avoid joints in a circuit where possible. What is making it so tricky?

Dunno, it's in my head lol. But for hypothetical reasons what would be the best way to proceed? Surely joining it would be no different than extending circuits to move a CCU?

 

[slingshot2000]

I did something like this recently. I terminated the SWA into wago box and the took the sheathed inner cores through the wall, in plastic conduit, straight into the back of the consumer unit. I took an earth, from the same terminal I put cpc from the SWA in, back through the conduit to terminate onto the SWA gland banjo.

 

[telectrix]

bear in mind that if the T/E from the CU is buried <50mm deep in plaster, it requires RCD protection.

 

[Deleted member 26818]

4 options:
Run the whole circuit from CU to outbuilding in T&E.
Run the whole circuit from CU to outbuilding in SWA.
Run the exterior part of the circuit in SWA, glanding the SWA into an adaptable box and the interior part of the circuit in T&E.
Run the exterior part of the circuit in SWA, glanding the SWA into an adaptable box with the cores long enough to reach the CU.
Fith option is to use a different cable altogether.

 

[hightower]

bear in mind that if the T/E from the CU is buried <50mm deep in plaster, it requires RCD protection.

Does penetrating through a wall at a right angle to go internal to external count for this?

 

[Deleted member 26818]

Cables which pass through walls do not require RCD protection, as the cable entry and exit points are visible.

 

[Flanders]

What He says /\ /\ /\ /\

 

[Dave OCD]

Does penetrating through a wall at a right angle to go internal to external count for this?

Not at a right angle, I always go up hill a bit from outside to in. :icon12:

 

[telectrix]

Does penetrating through a wall at a right angle to go internal to external count for this?

no.because the cable is nit parallel to the surface of the wall. it just goes through it.

 

[Skimpy Wan]

If there is an internal ring final circuit could you not extend a leg in a socket, drill through a wall and place an IP rated socket and then SWA from there to have a couple of sockets there (& down rate a Switched FCU for a lighting circuit)?

 

[telectrix]

If there is an internal ring final circuit could you not extend a leg in a socket, drill through a wall and place an IP rated socket and then SWA from there to have a couple of sockets there (& down rate a Switched FCU for a lighting circuit)?

you'd need to fit a 13A FCU after the house socket as you'd be adding more than 1 socket on a spur. would be bad design IMO.

 

[Skimpy Wan]

If the garage socket & outside socket were incorporated as 1 ring final circuit why couldn't you just add a FCU for the lighting to be down rated?