Swa sheath size too small | Page 2 | on ElectriciansForums
Guest viewing is limited

Discuss Swa sheath size too small in the UK Electrical Forum area at ElectriciansForums.net

Joined
Dec 24, 2016
Messages
404
Reaction score
92
Location
london
an outbuilding is supplied by a 50mm twin SWA cable from a PME supply

The assessor has told me to convert to a TT as the steel csa is too small, is there a way I can prove that surely a 50mm twin swa sheath is suitable to be a 16mm earth?
 
Hi - looking in GN8 tables B 1, 2 or 3 it has 50mm swa with steel of 68 (2 core), 78 (3 core) or 90 (4 core). For bonding it's the ratio of resistivity which is about 8. This means the steel armour is worth about 8.5, 9.75 or 11.25 mm2 of copper. The incoming DNO neutral may be bigger than 50, but even 50 needs 16mm (Table 54.8).
 
Keeps me entertained every few weeks theres just like 3 posts from pete with links to a file on his desktop that nobody can obviously access then he eventually figures it out..... Then forgets for next time :D

Leave him alone...you may need to know how to replenish a Le Clanche Jar,one day,and he'll not help you...;)
 
Keeps me entertained every few weeks theres just like 3 posts from pete with links to a file on his desktop that nobody can obviously access then he eventually figures it out..... Then forgets for next time :D
Old age mate you will get there one day if your lucky, I did try though, not going bother anymore if this round of pee taking is anything to go by, so you can all go jump in the river, I'll have you know I have a vast array of information in my resources file, all of which I will now keep to myself, mainly because I can't recall how to send them on this confounded computer thingamajig, so there, I'm off to sulk for a bit, see you later maybe.:tongue::tongue::p:D:rolleyes::)
 
Last edited:
never mind pete. first time i tried to cut and paste, i got slash marks on the screen and sticky goo on the keyboard. then i realised it wasn't about wallpaper.
 

Reply to Swa sheath size too small in the UK Electrical Forum area at ElectriciansForums.net

News and Offers from Sponsors

  • Sticky
  • Article
Wicked I've just actually looked through it and it's very smart. Some good stuff in it. There's a tile association company that do a magazine...
Replies
2
Views
281
  • Article
OFFICIAL SPONSORS These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then...
Replies
0
Views
270
  • Article
Hi everyone, Another weekend, another sale! Get ready for colder days with Haverland Radiators, combining efficiency with modern design. Keep...
Replies
0
Views
351

Similar threads

  • Question
Why would the RCD fail … yes it can happen but then it may not. Without it you have no protection on the TT System
Replies
36
Views
4K
Sounds more positive.
Replies
8
Views
588

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top