swa

  1. J

    Live garden SWA wrapped in tape

    The image shows an SWA feed for a garden building which is not yet built. The feed is part of a new build house installation and the circuit is supplied via a hager RCBO and was energised when I found the cable, I've switched the breaker off. Is leaving a circuit in this condition compliant...
  2. C

    SWA protection with off peak

    Hello, Been to look at job, a barn that's been converted into separate flats. Each one is fed by a 10mm 3C SWA. On peak, off peak and neutral. Currently they just have a double pole main switch for isolation but no protective device. Is there a nice little unit I can use that's designed to deal...
  3. F

    UK Acceptable ways to terminate SWA - standard practice question

    Hello folks Inhave my 18th Edition and Part P l, but I dont trade as a sparks. I have a question about best practice for terminating SWA. I am currently installing a connection to my new workshop. (I used to be STROMA registered years back, will likely reregister to sign off myself). 16mm...
  4. T

    SWA Cable on campsite fence

    Removed a rotting picket type fence on our campsite which supported 4 electrical 10 amp hook ups and replaced with new fence. As the new fence has different post spacings the previously installed SWA cable is either to long or worse to short. As the cable is above ground and running along the...
  5. T

    Solution for earthing SWA cable whose armour strands have been cut too short

    Hey everyone, got a bit of a dilemma here, I installed an isolator in a meter cupboard, unfortunately, I really did not measure things up and trimmed the SWA steel strands a bit too short, an EICR was conducted and this was flagged up. I don't think I can get a gland in anymore so wondering if...
  6. L

    Extending SWA garage cable

    I have run 10mm2 3 core SWA to garage CU but miscalculated the length and no way Im going to reach the house CU. I need to extend the cable, is it acceptable to do it like on the picture?
  7. L

    Size of earthing lead for 10mm 3 core SWA

    I am installing 3 core SWA using a piranha nut. What size of earthing lead to connect the piranha nut to earth terminal do I need? Does it also need to be 10mm or I can get away with 6mm?
  8. D

    SWA used to feed DC motor armature

    Hi, Is it permitted to use 2-cores of a 4-core swa cable for DC+ and the other 2-cores for DC- for motor armature, the field being fed by a separate cable? Thanks Dave
  9. HappyHippyDad

    Does SWA need RCD on a TT?

    I know the answer, at least I think I do as I am now questioning myself! It's just I've seen a few jobs recently where the electrician (or who ever did the job) did not give any fault protection to the armoured cable, so I am wondering if I am missing something? The most recent example from...
  10. S

    UK Is the main fuse head satisfactory protection for SWA supply cable?

    Commercial/Industrial installation. Summary of installation: Main feeder pillar contains TNCS incoming supply single phase 100A main fuse, 25mm DNO tails, meter, 100A double pole isolator switch, 25mm tails/16mm CPC to 63A rotary isolator, 10mm SWA cable 25m run to digital advertising panel...
  11. R

    25mm swa armour for cpc

    Hi all, Just planning a sub main to an outbuilding . It will be 80 metre run, buried direct on a 63amp fuse . So I am thinking of running 25mm swa but just been doing my calcs on whether I can use armour as Cpc. The outbuilding is going to be TT so no need of a bonding conductor on the...
  12. D

    UK Swa as main earth ?!?

    So I have turned up on a job… someone previously has installed a 120mm 2 core swa from the meter to a barn building 160m away and them split off for the house and barn building in 25mm tails and have used the armour on the swa as the main earth. Both ends of the swa have been terminated badly...
  13. holmestm

    Should the armour of an SWA carrying twin and earth cables also be earthed (with banjos etc)

    I have an existing installation extended in 2015. The existing cable had 3 cores and used the armour as earth, with connections soldered onto the SWA gland where required (e.g. in external sockets). At the point the extension was added the contractor took the armoured earth and connected it to...
    • holmestm
    • Thread
    • and earth armour cables carrying earth earthed regulations swa twin twin and earth
    • Replies: 10
    • Forum: DIY Electrical Advice
  14. W

    What size SWA cable and what Distribution boards required to shed and garden office.

    Want to install a garden shed with Tumble Dryer and separate garden office building. I have run duct from side of house to where garden shed is going to be, then run another duct to where garden office is going to be. I am planning of having the office heated by electric most likely a plinth...
    • Wilf999
    • Thread
    • boards cable distribution garden garden office office required shed size swa
    • Replies: 14
    • Forum: DIY Electrical Advice
  15. T

    SWA cable Terminating or not??

    Had a discussion with my electrician today about upgrading the SWA mains cable fed from my house to my garage as im looking to use the garage for some woodworking machines, eg table saw, planer as well as some sockets and lights. Sparky has informed me that there is currently a 3 core 6mm SWA...
  16. P

    Earthing SWA at lampposts with plastic fuse enclosures ?

    Hi All, Just finished testing lamp post supplies pre LED upgrade for a company where the measured Zs exceeds maximum permitted on all circuits. DB change is in the pipeline but brings its own issues with inrush current and what type of MCB to utilise due to the poor Zs readings. Current earth...
  17. J

    Is it possible to put a 16mm swa on a 40a mcb protected by an rcd

    Is it possible to put a 16mm swa on a 40a mcb protected by an rcd
  18. sythai

    Been struggling a bit today! Cat5e SWA

    Hi Guys After bit of advice please as we don't do much data normally, tend to sub it out. Had garden building this week which we'd run in SWA cat5e in and decided to terminate and test ourselves. Put a click RJ45 socket at each end and tests failed, tried with hager RJ45 and same issues. On...
  19. C

    Best method to calculate 4 core SWA current rating for two pairs of 1PH line conductors

    Hi, I have a Victron Multiplus-II 5kVA inverter/charger with Pylontech US5000 batteries installed in my house along with a 6.8kWp PV array and associated charge controllers. This installation has full DNO G99 approval and was installed to BS7671 and has been running great for about 18 months...
  20. Brownie91

    Is RCD protection required on SWA supply cable to EV?

    Hi all, I am at odds on whether RCD protection is required on an SWA of 14 metres, clipped direct under flooring direct from CU to an exterior Tesla EV charger. The Tesla charger is three phase and to be a 22kw supply at 32A. TESLA SPEC: The wall charger itself features a built in RCD Type A...
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