swa

  1. S

    50v on swa banjo ? TNC-S system new build

    I’ve had a weird one today. Banjo having 50v on it. L - main earth = 230v L - N = 230v N - main earth = clear I have 50v on the live - banjo & 24v on the Neutral - banjo. Disconnected both sides of the armoured and done insulation resistance between all cables and all <999.
  2. D

    am2 resit tommorrow swa/ sy earthing

    resitting Saturday my am2 4 sections a3/b/d/e swa and sy failed on protective conductors on both swa i under stand thats the earths i think i used a smaller fly lead from the banjo to the db/ and a earthing nut with the banjo sy think i used a 1.5mm flylead so correct me if im...
  3. timhoward

    Uncommon SWA cable with different coloured cores

    I was the 2nd sparks taking over a garden office supply job. The first sparks had fitted 10 sq mm 3 core SWA, but it actually had brown, blue and g/y conductors. The middle was also more like hi tuff in the sense the insulation surrounding the 3 cores resembled a cable in its own right not just...
  4. rrafluap

    SWA Internal Switch, best practice

    Hi, I'm going to be installing an outdoor socket, have no problem with the outdoor/socket side, but when bringing the internal end or the SWA into the property, need to be able to switch it. Only have hollow plasterboard void to mount fused switched spur to. But unsure of how I should terminate...
  5. Neptune

    Brick wall lights - SWA cable connections

    For various reasons out of my control, we have wound up in a situation where we have 1.5mm SWA cables buried in these pillars and exiting out of the plastic housing for the wall lights. There are around 5 of these lights across the 5 pillars. Daisy chained with the 3 core SWA. As you can see...
  6. KeenPensioner

    DIY Question - Is this SWA? or Hi-Tuff

    My sister has a cable feeding an outside boiler (see image). I want to tidy it up by adding a new piece of cable as shown. I can't see any ends of the existing cable to determine whether it's SWA or Hi-tuff. Is there any way of determing whether this cable is swa?
  7. B

    SWA to submain and NSH

    Hi guys, Can I ask you a DIY question? I'm refurbing a detached garage and adding a garden building. Garage currently has a submain supplied by 10mm T&E on catenary from the house. I want to replace this with buried cable from house to garage submain, and from garage submain to garden...
  8. V

    Extending tails - SWA or Hi Tuff ?

    Just wanted to know which people use. My case. Client converting attached garage into new rooms. Consumer Unit has to move to accomodate this and will be greater than 3m from meter. Void above garage is used to route cables to main house so can use this to route cable for extension to tails...
  9. J

    For Sale SWA 10mm drum for sale

    I have a drum of 99.9 metres of 10mm SWA 3 core. Probably 2 years old, it's been sitting in my container for the last year, and I'm sick of tripping over it. Anyone like to make an offer? I'm on Hayling Island, and could deliver within reason if the price is right.
  10. F

    SWA and separate conductor as CPC

    Evening all, Having a debate with a colleague about using the SWA armouring and a separate conductor both as CPC's for a circuit. So in theory bringing down the Zs of a circuit due to using both as CPC's. I'm swaying to thinking this is wrong however, I'm struggling to find any regs to express...
  11. mak

    Question about earthing the armour of SWA

    If cpc core is present i.e. it's either 5 core three phase or 3 core single phase — is a banjo connected with a brass screw into steel trunking adequate to earth the armour(provided trunking is earthed to the earth bar)? Or would you put fly leads in between then a fly lead to an earth bar? Thanks.
  12. spuff01

    Industrial Radials in SWA

    Hello all, Trained years ago, not done much for about a decade but I've been asked by a friend to add 5x double sockets into an industrial unit, my thinking is to use a radial 32A RCB, 4mm 3-core SWA cleated to the wall (moderate impact risk). Area is small, only about 2-3m from the...
  13. Y

    Alternative retro fit earth tag options for SWA?

    I'm working on a system that has been installed incorrectly. It's a 3ph Hager board with 8 swa cables glanded into the bottom entry panel. The install is fine except the earth tag (banjos) haven't been fitted and they have relied on the metal plate as an earth. My question is, can you get a...
  14. denny2k2

    UK Buried SWA Troubleshooting

    Hi guys, long time lurker first time poster. I have an SWA 3 core armoured cable buried that runs to my back garden. This originally serviced an old delapitated workshop from the previous home owner. The workshop was removed, SWA armoured cable cut and left available to be reused in the back...
  15. W

    Does a 32amp distribution circuit wired in SWA to a sub board need RCD protection ?

    For context i am in my 2nd year in college and my head is going round in circles a question in my project for which i need to select the right protective devices for : A 32A distribution circuit from the main board to supply summerhouse will have a four-way SP-N distribution board fitted...
  16. HappyHippyDad

    Ideas for finding fault area in underground swa?

    Afternoon everyone.. During some testing I have found an IR reading of 0.01MΩ between N-E. This is on a length of SWA buried underground from the main consumer unit in the house to a garage consumer unit. The poor readings are not on the outgoing circuits in the garage. There must be a join...
  17. M

    5 core swa cable calcs

    Hi there , is there anything else to consider when using 5 core SWA instead of 4 core + separate Earth in three phase installations for cable calcs etc? Apologies but just moving in to the 21st century never used 5 core before
  18. P

    UK Solar SWA cable run 10mm or 16mm

    Morning, I was just looking for some advice on what other sparks would do for the following scenario:- A detached Garage is going to house a 7.4kw Solar Array and around 12kw of battery storage. The supply needs to return back to the main house (cable run approx. 22m) to DNO/consumer location...
  19. J

    SWA as cpc to submain-Suitability, & PC's on RCD's.

    Been looking at a CU change in a small office and would appreciate comments on the following. Office is supplied from the mains intake in the warehouse via a 2 core 16mm SWA buried under concrete with the SWA used as cpc (60A BS88 is the protection). Mains intake in the warehouse is a 3 phase...
  20. R

    UK Class II enclosure + gland recommendation for divorcing SWA armour at TT outbuilding/shed?

    As the title says, I am looking for a recommendation for an enclosure and gland arrangement to electrically isolate or divorce the earth/armouring of a two core SWA supplying an outbuilding/shed. The supply to the property is overhead TT, so DNO provide phase and neutral only, a sub 20 ohm rod...

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