size

  1. K

    What size cable is this?

    Can anyone tell by just looking what size cable this is ? It’s not written on the grey outer armour
  2. T

    How to work out the total design load to find my swa cable size

    Hi all I am having trouble trying to work out the total load and swa cable size. I have 10 circuits in a outhouse 40 meters from the mains power supply 1 x lighting with 10 lights, 1 x lighting with 10 lights. 1 x 2.5mm radial for 2 heaters, 1 x 2.5mm radial for heater. 3 x 2.5mm socket rings...
    • Ted Curly
    • Thread
    • cable cable size design electrical work how to load out size swa total work
    • Replies: 62
    • Forum: UK Electrical Forum
  3. M

    Armoured cable size

    Hi, having a granny a erected in my garden and doing a lot of the the work myself. Looking to run a armoured cable feed into the anex so it's already for electrician to eventually wire up my question is as follows. Works out as 25m run I'll need from where sse feed in is to fuse box location...
  4. T

    Size bush and lock ring

    Can anyone tell me what size bush and lock ring you need for 4 25mm tails and 16mm G/Y? For a snug fit Or is there a 3phase tail gland out there?
  5. J

    Cable size

    Hi, Looking for advice, Doing a new build in a rural location and I’m having to run a mains electricity 500m to the nearest meter. Had a couple of quotes so far but there vary massively in price. The first quote the electrician was going to use 16mm cable which even I thought would be too...
  6. HappyHippyDad

    Cable size and how to earth this system?

    Morning.... I have a friend of a friend who is just looking for some advice regarding his 12V solar set up. It's a metal shed approx 5m x 3m. My 2 questions are: 1. Does the cable joining each of the 5 batteries have to be 50mm as well as the cable from battery to 3kW inverter? I'm sure it...
  7. B

    Back box size for sockets

    Afternoon one and all, Just wondering if anyone has any experience with fitting chrome 2 gang sockets to 25mm back boxes. I bought a pack of 5 LAP chrome double sockets from screwfix but noticed that the listing online says a 35mm back box is required. I have measured mine and they are only...
  8. Q

    Eicr sample size question

    Good afternoon Was just wondering when a sample size is set for an EICR Say 50% would the remaining circuits have to be identified for schedule purposes. I'm training to becoming an electrician and it's something that I'm unsure about. Thanks Harry
  9. B

    Cable size for spur socket

    Hi all, I have a spur socket on the upstairs landing from a ring socket in an adjacent bedroom. It is connected in 2.5mm T&E ; is this okay or should it be 4mm due to it being a double outlet hence it could supply 26A? It currently has only a decorative LED tree thing plugged in. The cable...
  10. B

    Testing pyro 2L2.5 cpc size

    When testing 2L2.5 & 2L4 pyro what size should be recorded for the cpc when using the outer sheath?
  11. C

    Bus duct - Earth cable Size

    Bus duct is used to transmit the power from the secondary of the transformer to the Main distribution board? If the cable is used instead of bus duct, we would size the ground cable approximately half the cross section area of the power cables according BS 7671 table. 54.7 If this is a bus...
  12. C

    Calculating Earth Size

    Hello All, Just a quick one. We look after a factory that has a 250amp busbar running around the factory. We have a machine plugged in with a 70mm 4 core swa and the ZS reading is too high so we are going to run in a separate earth to help, how would we determine the size needed to run in? Thanks.
  13. N

    Caravan site, cable size

    I am pricing a job to wire 21 new pitches for a caravan park. There will be a meter box beside each caravan with a 16a trip. I will split it into the 3 phases, so 7 caravans per phase. Im just trying to figure out how to calculate the cable size. Is it better to run a ring main to pick up 7...
  14. V

    ring circuit for a submain?

    trying to find answers in the reg book, but is there anything to say you can't install say a larger ring circuit for a sub main? to reduce volt drop / cable size etc. Normally you would obviously install a large enough cable, but would this be acceptable , whats our thoughts?
  15. B

    UFH thermostat feed what size cable?

    Hi all. I’m just planning out my electrics before boarding the new en suite. Can someone verify. Should a fused spur come directly from a socket or can I break in to a single cable using a Wago box? Also is 2.5mm2 cable ok to the thermostat? I’m not making the connections, I will be employing...
  16. C

    Choosing the right size cable

    Hope someone can clear something up for me. I've been selecting cable recently to wire up industrial machinery for test purposes only. I usually purchase H07RN-F or H07BN4-F. My boss has informed me that the cable needs to have a current carrying capacity to match the supply it's being being...
  17. Baddegg

    Joining different size cable.....

    As per title, went to look at kitchen rewire this evening, no probs all straight forward, as I’m about to the leave lady says while you here I keep getting shocked from this wall when I washed it down? Turns out someone has extended old 4 mm stranded cooker circuit with 2.5 and put a double...
  18. J

    Oven and hob cable size and isolating switches

    Thanks for adding me to the forum. I have done quite a bit of electrical work around the house adding sockets, and at our current house I put in some new ring mains and lighting circuits, all subject to third party certification and with the new consumer unit installed by a qualified...
  19. R

    mcb and cable size help

    Hello all I've just developed a wiring fault on the only ring main, after spending a few days attempting to find it and being pretty appalled by my findings. I have decided to re-wire the house. I have just spent all my spare money on a cruise so I guess I will have to get "Me sen ltd" to do...
  20. A

    Induction hob butyl cable size

    I am installing an induction hob to a dedicated 32a supply. The hob is rated at 20a. From the hob I am going to use a heat resistant butyl 3 core cable. The 2.5mm cable is rated at 24a, this seems a bit light to me, do you think I should use 4mm which is rated at 35a or will the 2.5mm be ok...
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