swa

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  1. 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...
  2. 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...
  3. 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...
  4. 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
  5. 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...
  6. 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...
  7. 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...
  8. newfutile

    Swa outer connected both ends

    During an EICR I havr encountered swa feeding 1 lamppost not glanded at the post end, the feed is connected to the chassis of the 3 phase DB. I was thinking this would attract a C3 code, but I thought I post it and ask others what they think? It's fed from a 6 amp type a hagar rcbo tho it...
  9. S

    Running 2 phase in swa

    Due to an increase in load for a subman, I now need 2 phases for an outbuilding. Original design was 63a supply, but now an electric shower and another ac unit has been added due to a design error. Questions are, can you get a 2phase mcb to fit a schnider PoN board? Are you allowed to supply 2...
  10. S

    SWA/SY cable in a fibre duct

    OK. I can already feel the eyes rolling I am working in a yard where we are having trouble with vandalism. There is absolutely no way of getting a cable (easily) down the to front gate, as the perimeter is hedging and the car park is concreted entirely. The ONLY duct to the gate from the...
  11. cliffed

    Swa armouring let it be Earth

    How come some qualified electricians will argue & argue about earthing the armouring of the cable. Seen many jobs where they use plastic junction boxes & no earth continuity on the armouring. Regardless of how many cores are used it still needs earthing. Their biggest argument is it’s only for...
  12. M

    Where is the correct place to terminate a seperate earth ran with a SWA ??

    Hi all. I have noticed there are two schools of thought here when running a separate earth with a SWA to a large DB, where is the correct place to terminate the earth ? . We can go straight in to the internal copper earth bar as we have spare unnumbered holes for it , or we can lug it and go on...
  13. T

    SWA Carrying DC - Correct way to earth

    I know PV installers sometimes use SWA to carry DC into the house especially when the PV is ground mounted. Can anyone help me understand the correct way of doing the following: 1) Earthing the SWA armour, should this just be connected to the house earth as it would for AC or something else, I...
  14. S

    SWA protection to car charger query

    Qualified electrician has installed Zappi car charger outside house. Grid incoming goes to DNO cutout then to SPD then to meter then to henley block then to RCCB then to SWA cable out wall and to charger mounted on outside wall (about 4m length SWA). I just learnt that RCCB gives no overcurrent...
  15. T

    Advice on cable for EV Charge Point Cable

    Just taken deilvery of an Electric Car (Mini Electric) and so doing some research into installing a charge point. Supply is a standard Single Phase and I have appointments booked with my supplier and DNO to upgrade meter tails and cutout fuse respectively. I'll get a spark to do all the...
  16. S

    Correct way of routing SWA supply for flats ?

    Hi Fellow electricians, I’m recently qualified and I would like clarification on swa supplies for flats, my boss says this is okay but I’m not sure. So my question is if my supply is downstairs can I run my SWA through joists under floor boards and stud wall cavities without rcd protection. it...
  17. I

    Suitability of SWA armouring as CPC

    https://gadsolutions.biz/regulations/swa-as-the-cpc Anyone know how reliable the tables on this website are for determining whether the armouring of a cable can be used as it's earth? Not too sure how old the page of the website is so could have changed since it was made or could have been...
  18. naylorpd

    Stripping SWA for copper

    I'm in Azerbaijan, and in our company store we have a number of drums of cable, all upwards of 5 years old and basically unsaleable. We're looking at the possibility of selling for scrap and the usual question is whether to sell it as-is or to strip it ourselves down to bare copper.The selling...
  19. Dartlec

    Feed to flat in escape route - best option?

    I have a job coming up where I likely need to replace old twin and earth (imperial size) feeding one, perhaps two flats in a 3 storey converted building. The ground floor is a separate front entrance, the upper flats have a side entrance with stairwell, which is protected with smoke and EL...
  20. kesterlester

    Are many potential uses of SWA **UNEQUAL** tee connectors illegal?

    It seems to be easy, these days, to buy fittings (often containing resin) that allow someone to tee into a pre-existing SWA cable. Some of these are equal tees, and some are designed so that the "new" branch cable has a smaller diameter than the main "through" SWA which was broken into. I'm...
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