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  1. V

    Neutral Conductor Size - Main Switch to Neutral Bar

    Don't come across this very often - but I've had a CU delivered for a caravan job (not static btw), and it's been supplied with a neutral conductor from the main switch to the neutral bar! Definitely an oversight, but I've got plenty of singles cable in stock, so rather than send it back, I...
  2. M

    UK Selecting bonding conductor size

    This is a question (or discussion probably) regarding selecting the main earthing conductor, and subsequently the main equipotential bonding conductor sizes in a TNCS installation. We are fitting a replacement consumer unit only. The property currently has 4mm bonding cable installed to gas and...
  3. A

    SWA banjo fly lead size

    Hi all. Could I ask some advice please regarding SWA banjo fly lead sizing. Can anyone explain what sizing or how you size the required earth size when: A) The armourings are not used as cpc B) When armourings are used as CPC? I’m still learning and can’t find anything explain I guess this...
  4. C

    Cable size when burying

    I have a run of cable where 12% is buried in ducts, the rest is on perforated tray, what are the limits on amount of cable buried when sizing cables?
    • craig.jones76
    • Thread
    • cable cable size size when
    • Replies: 17
    • Forum: UK Electrical Forum
  5. newfutile

    3 phase SPD MCB size

    Does anyone know what size cable to use for a MCG type 2 SPD (3 phase) and what MCB.the manufacturers instructions don’t state any values! also should i use 3 x single phase or a 3 phase MCB?
  6. L

    What size SWA for 3 flats

    Hi all, I’ve been given 3 flats to re wire and i was looking for advice on the correct size Swa to use. There will be 3 meters installed by the DNO, 1 for each flat. My plan was to have switch fuses after the metres and then run Swa to the DB’s. The longest run for the furthest DB is around 20...
  7. clanky

    Sums Check on Cable Size for Remote Solar Array.

    Hello, hopefully ive got this right but if someone can check over my maths for me, id appreciate it. Im needing to install a new supply cable from my remote solar array and because of the distance, it needs to go underground for about 35m then into a nearby barn where it will be joined into a...
  8. D

    Does the ground wire need to be the same size as current carrying conductors?

    Running #8 to AC condensor. Does the ground wire need to be #8 as well?
  9. clanky

    Solar Panels Cable Size needed from Ground Mount

    Hello All, Currently building an extension to my barn/workshop and before i pour the foundations i want to run some new cables from my ground mount system which will eventually go through the barn and then into the house. The run comprises of: i) 25m Buried from the array inverter to the...
  10. A

    Replacement Hob Wire size

    Another hob wiring question sorry, I am replacing my oven and hob and the oven connections was fine, 6mm from new consumer unit on a 32a RCBO split to oven and hob. the new hob is 6.2kw, old hob is 6kw the new one will not take the 6mm cable that was connected to the previous hob and the...
  11. Downham

    Cable Supply Size 1km

    Hi there I am looking to run a supply cable to a house in rural Italy, however, it's quite a distance from the pole to the property. The distance is 1km, the supply is 230v, single phase, usage will be average... 8kwh? My question is what size cable would I need? Would they need to be...
  12. T

    Cu change in a flat earth size

    In my flat the main earth is the cable pictured below it has 7 strands any idea what size this is? And if it would need to be upgraded for a cu change The bonding is in 6mm but is easy to change to 10mm but I guess that's irelavent if the earth is 6mm? The conduit system the 16mm tails come...
  13. J

    Electrical size conductors and conductor rating

    Hello, I’m building a wood shop. I’m planning on installing 240 and 120 outlets. I plan to connect to my supply panel using a 90 amp breaker. They’re run to the shop is 140 feet. I will use 2” underground conduit. I’m just not sure what size and what rated copper conductors to use. I used...
    • Jimongee
    • Thread
    • conductor conductors electrical rating screwfix size
    • Replies: 4
    • Forum: UK Electrical Forum
  14. R

    Panel wiring and cable size question

    Hi All I’m in need of a bit of advice. I’ve recently started a new job and have been given the task of relocating some machinery. There are 3 separate machines on the line with 1 feed from a bus bar with a 35mm cable protected by 125a fuses. What I’m planning is to take the feed to the first...
  15. S

    Electric oven cable size

    Browsing to buy a new electric oven. I came across a Hotpoint with a rating of 10.7 kWh. I calculated that would need a 16mm cable! Surely not? I multiplied by 1.25 as when it's on its a continuous draw. Thoughts?
    • Sonia Norman
    • Thread
    • cable cable size electric oven size
    • Replies: 6
    • Forum: UK Electrical Forum
  16. Rockingit

    Small size flush fit consuner unit

    Anyone have a recommendation for a smaller size (4ccts sort of thing) flush fit CU? SWA in, domestic stuff out.
  17. H

    what is the cable size for 120A?

    what is the cable size for 120A?
    • harridnaufal10
    • Thread
    • cable cable size size
    • Replies: 2
    • Forum: UK Electrical Forum
  18. J

    What size is this supply?

    A relative in West Cheshire sent me this pic. He is contemplating having an EV charger and other electrical appliances fitted. He asked me if he has a 60A or 100A supply. From this pic, it looks like a 100A supply with 60A fuse fitted for some reason. He wants it to be 100A. Any ideas?
  19. E

    wire size for a gas furnace

    I am installing a carrier infinity gas furnace and I don't know what size wire and breaker I need for it. Could anybody help me please?
    • eyekamy
    • Thread
    • furnace gas screwfix size wire
    • Replies: 1
    • Forum: UK Electrical Forum
  20. S

    Cooker cable size 12.9kw cooker

    Will a 12.9kw freestanding 60cm induction hob cooker be ok on a 32amp 6mm cable cicuit.

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