TT or not TT. Need clarification

[Stix]

As per title; having a pre fab shed in back garden installed on a concrete base that will have a dp membame. No reinforcing mesh. 15 metres from house. Looking at spurring off socket on back wall to an rcd spur. Runn8ng down outer wall in conduit to a weatherproof box. Then using 4mm swa to shed. Shed will have no gas/water but will have a metal door and galv pearling beams for roof. Only used for mowers;strimmer and a chest freezer. One led light to be fitted also. Am qualified c a g 236 pts 1 an 2 but out the game for 10 yrs. Is TT needed? Was looking at fitting a garden shed tyoe cu with 6a and 16a mcbs. Sockets woukd be rcd type for protection

 

[Stix]

Ah but nothing wrong with a bigger cable to minimise volt drop/reduce Zs and 'futureproof' Pete. And if I had a suitable length of 4 or even 6mm SWA 'in stock' when a similar job came up it would surely be put to good use.

The "in stock" and futureproofing" is very accurate in my choice of cable. As was the volt drop consideration.

 

[Pete999]

Ah but nothing wrong with a bigger cable to minimise volt drop/reduce Zs and 'futureproof' Pete. And if I had a suitable length of 4 or even 6mm SWA 'in stock' when a similar job came up it would surely be put to good use.

I suppose you are right Dave, nothing electrically wrong, butcould be just me being ----, now no jokes please.

 

[Toneyz]

It's like our shed Pete 20A C RCBO 2.5 T & E clipped to isolator switch through the wall to adaptable box 6.0mm SWA as it was left over (FREE) left over dado above the workbench each side (Free).

 

[Stix]

Sorry for delay in response guys! Was thinking of using an RCD FCU in house to feed concrete garage; so as to reduce risk of rcd knocking out circuits on CU RCD protected. Only feeding chest freezer(if we buy one); spurring off fir a led light and garden eqpt. As in lawnmower strimmer etc. Can anyone see any pitfalls in this set up?? Thanks for any advice !

 

[Toneyz]

There is no discrimination for installing an RCD FCU on a ring final circuit with RCD protection.

 

[Pete999]

What Rod?

One like this Mike
Diem | XT Carp Rod | Rods - https://www.sportsdirect.com/diem-xt-carp-rod-940131?colcode=94013103