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swa

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  1. O

    Using SWA for tails.

    Hi everyone, Just been on a new build (one off build not cookie cutter), original sparks left some SWA for a car charger and electric gate that I have been working on, I have signed off these two new circuits. The tails have been taken from a DNO supplied main switch, TN-CS with 100A fuse. He...
  2. N

    Swa cabling above ground

    I am volunteering at a disabled riding school charity and have been been donated a hay steamer that we want to get running. However, the quote we have been given to upgrade the wiring to support it exceeds our funds. I'm trying to find a cheaper way to do it by avoiding changing existing wiring...
  3. P

    50mm swa disitribution advice

    Hi all, After some advice. i have a run of 50mm 4 core on a farm to reinstate some GP buildings. 100A feed, with fused disconnect at the origin. in its run it needs to be intersected to feed a small existing 3phase board just for some lightingin a tractor shed. my thoughts are use a non...
  4. H

    Hot SWA gland

    I have a hot SWA Gland on a 11kV cable. The cable has a SWA Gland on each end. I was under the belief that this would create a current circuit. There is 3 trefols running in parallel. Any suggestions
  5. 1Justin

    slim 6mm SWA Y joint for bollards?

    Terminating 2 x 6mm swa into 1.5mm H07 flex inside lighting pillars. Many of them.. Max probably 85mm dia. Wiska 308 too big, Wago capsule too big, Galv trouser boxes too small. Nothing seems to be suitable. Am thinking of making my own with 82 dia solvent weld tube. - Know of any commercial...
  6. G

    Splitting 25mm meter tails to SWA and 25mm tails

    Hi All, I need to split the meter tails to supply a second CU which will be at the rear of the house, however the supply to the second CU will need to be in SWA and I can only split the tails at the meter cupboard. Is there a suitable adaptable box or isolator I could use to be able to do...
  7. M

    Terminating SWA into DB

    Morning. I have been asked to finish a job to connect a 1.5mm SWA cable into a DB which feeds a post to power some security cameras. The SWA cable enters the building and into some metal trunking. The trunking butts up to the DB and there is a large entry hole into the DB through which the...
  8. P

    SWA cable calculations!!

    Ive been asked to confirm the maxium possible supply for an existing SWA sub main and I know im doing something wrong with my cable calculations. Its a 10mm 3 core SWA currently on a b40 on a split load boad but its about 120m run ( direct burial) and they want to run an airsource heat pump...
  9. Mark42

    Augmentation of existing submain. Complicated layout. Advice please!

    Apologies for the complexity of this question, but there’s no easy way to explain it. This is a remote Norfolk house and workshops, developed over 30 years. Due to diversification, building B on the plan needs more power than originally expected, and building D is a recent addition. I’d...
  10. C

    SWA Cable Tracing

    I have multiple large looms of various cables that I need to trace. These are various services including power, fibre, copper, other 'unknown' cables etc... I want to be able to trace a single cable using the SWA. I want to remove a section of the outer sheathing and put a tone on the SWA and do...
  11. Vortigern

    SWA supply cables between buildings will not disconnect in required time

    Doing calcs on swa supply to building as sub main from main three phase squard D board for single phase supply off of TN-S supply. I used cable mate from jarsoft and looked up various tables for disconnection times. In all case scenarios it tells me it will not disconnect within the required...
  12. G

    Incorrect SWA glanding/bonding

    Hi all, I've just moved into a rented property and found the attached photo outside the conservatory. It spurs from an inside socket and goes down the garden to an outhouse. I've tried using the 18th edition to find some evidence that this is obviously the incorrect method, as I'd like to go...
  13. gazdkw82

    Swa banjo location

    I am having to redo the installation side of the AM2s as I failed the conduit. I was thinking about the banjo on the SWA, is it meant to go on the inside or outside of the enclosure that the gland fixes too. I asked the assessor and he said he cant tell me. Seemed to me they are looking for it...
  14. G

    2.5mm or 4mm SWA armour bonding

    Armour not CPC. By the letter of the regs 2.5mm is acceptable as the DB offers both mehanical and corrosion protection. Just seems a bit puny on a 10mm SWA, what about a much larger cable? Can some of the boffins explain why 2.5mm is deemed acceptable. Cheers
  15. T

    3 phase swa sub

    Just a quick one does a three phase 25mm sub main in swa 4 meters long have to be fused even thou it comes from a bs1361 100amp services fuse then from a standard three phase isolation switch fitted from electricity company? Being swa and 25mm in size would this be acceptable?
  16. L

    SWA questions, doubting electrician

    Recently had an electrician in to wire up power to a detached garage and also wire in a 32 amp rotary switch for an eventual hot tub install. He has used a spare 40amp MCB in the house consumer for the garage and a 32amp one for the hot tub point. Cable run for both is about 10m each. He left...
  17. I

    New SWA to flats from head

    Hi Guys, First time posting but I've been commissioned with essentially running new cables from the head to 5 flats, due to the ground floor flat not allowing us to run the cables through their flat to the next one we will have to come out of the basement and upto the roof and then down the...
  18. D

    SWA sheath, earthing and empty consumer unit space

    Hi all I had some house rewiring undertaken on my house and have come across a few issues since painting. First thing was damage to the rubber outer sheath of the SWA cable on the outer wall which I've rapped electrical tape around temporarily as the metal rods were visible and we had a lot of...
  19. A

    Meter tails issue

    Hi guys I'm installing a CU in a new build and have a couple of questions I need some guidance with regards to the meter tails. I need to drill a hole through the wall (for the meter tails) to access the main supplies which are located in the recessed box on the outside of the property. I am...
  20. K

    UK RCD keep tripping.

    Hi All.. I have a 16mm 3 core swa feed a 9way split board in shed, 30m from incomer .. from the split board I have run a 10mm 3 core swa to 2 way board for hot tub. This has a 63amp rcd in it.. the other end at the split board is also a 63amp rcd on its own of one side of the split board.. this...

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