incomer

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  1. G

    Earthing inside a submain panel from main swa incomer

    OK, going to keep this short. Supply is 150mm 4 core SWA, with NO supplymentary earth ( calcs done by others, ) QUESTION IS. Do you NEED to run an earth ( is it a regulation) from banjo on inside to earthing terminal inside board. Common sense and a simple ohms continuity test (0.01 ohms)...
  2. T

    Electrical incomer too old?

    Hi, Apologies if I'm breaking a million rules by posting (and registering here) as I'm not an electrician, but I had a question about the safety/age of something electrical. I have just recently bought a house, and the survey flagged up possible electrical issues. We had a local electrician...
  3. C

    Single Pole RCBO in TT with Time Delay RCD Incomer

    Hello, Newcomer to the forum, so hello all. Just to clarify, although I understand most of my way around the regs and workings, still get an approved guy to to any work......just thought I'd get that out of the way! Anyhow, I have an old property that fed by good old overhead Live/Neutral so...
    • Craig Rogers
    • Thread
    • delay incomer pole rcbo rcd single single pole time time delay
    • Replies: 36
    • Forum: UK Electrical Forum
  4. D

    Moving Electrical Incomer

    Hi Im considering buying a repossession and was wondering how much it would typically cost to move the main Incomer about a 3 foot. It currently comes out the floor in the kitchen and is about 20 cms off the floor level. Realise i cannot move it myself as it's non-contestable work. Any thoughts...
  5. S

    Help ideas on moving a main Incomer

    Hi guys, I have just picked up the keys to my new house, the Incomer is exposed under the stairs and looks a mess, I will be doing a gradual rewire as we revamp the house over time but firstly I will be sticking a new CU on. Now if you look at the pics what would you guys do with this? I want...
  6. M

    Swa main incomer size

    Hi just after some help. It's a high rise block new install. Dno are wiring up to the Ryefield board then to the meter. Then there will be an isolator and then run to each flat cu. question is what size cable. I've been told 3 core 25 mm swa but this seems a bit excessive for 100a dp main switch...
  7. Energetic

    Does a TT Earth 0.13Ohms require a 100mA incomer?

    Had an interesting one this week, customer assures me he's on TT, DNO days the same but i'm getting 0.13Ohms on the Ze, never seen it that low befor. There's no 100mA RCD on the supply and it doesn't look as if there's ever been one, so with that reading i'd assumed it was a TN system... so my...
  8. N

    3 Phase Dis Board Incomer

    Having a quick discussion in work with regards to sizing the main incomer of a three phase dis board. Can someone please tell me how the correct way to size the main incomer of a three phase board or single phase for that matter Cheers Folks
    • nandrews87
    • Thread
    • 3 phase board incomer phase
    • Replies: 26
    • Forum: UK Electrical Forum
  9. M

    Help on mains power

    Hi, went to to look at a job last week where the builder proposes that the new electrical installation will require 135amp three phase. However the the main incomer to the site only seems to be 100 amp three phase and a 25 mm incomer. i have calculated that the run from the main incomer to...
  10. M

    2 core SWA sub main in domestic flats

    Hi all, so what would be your plan of attack..... Gone to have a quick look at some remedial/maintenance on a domestic flat within listed building. Mixed occupancy of rented and owned. Owner not present but another person lets me in. Im told metering equipment and incomer is in basement but...
    • MTI
    • Thread
    • 2 core core domestic flats incomer lighting main sub main swa tomorrow
    • Replies: 1
    • Forum: Domestic Electrician Forum
  11. B

    Cast Iron Incomer

    Just a bit of advice from you guys. Seem to be coming across these a lot recently in old houses-cast iron main fuse on the DNO side, prior to the meter. Told customers to approach DNO and get them to replace. Does anyone know if the DNO's are charging for this service? The last one I went to...
  12. H

    Incomer

    2 x 25 mm tails and a 16mm earth as the main incomer ! Never saw this before has anyone else? Couldn't find where they when,t too.. Don't they have to be 3 m max? Cheers
  13. H

    Current Capacity of a main incomer cable

    We have a main incoming cable coming into a factory unit where I think the size is 300mm 4c. The cable head says 400. Is this the current carrying capacity of the cable or just the model number of the cable head box? I can't get a definitive answer even from Scottish Power!!! Thanks. Hutch
  14. P

    Busbar Diffrential protection for 2 Incomer & 1 Buscoupler logic ( 2 out of 3)

    In system of 6.6kv there is busbar differential protection is provided. The operating philosophy is of 2 incomer & 1 buscoulpers ( With TWO incomers ON & Buscopler OFF). The differential scheme is of 2X87 type ( respective bus has its differential protection) Case -1 TWO incomers ON &...
    • pal
    • Thread
    • busbar electricians' talk incomer logic out protection
    • Replies: 10
    • Forum: UK Electrical Forum
  15. D

    Oak framed garage with plastic water pipe incomer, do I need to bond?

    I realise this question has been asked in all sorts of different ways before but I would like your opinions on the following, I have an oak framed garage with accommodation upstairs, the water comes in via a plastic incomer, once in the property (behind the sink) it then connects to a copper...
  16. S

    SMA4000TL grid voltage too high

    I think I read that this unit can be adjusted in case of high grid volts or fit a G59 relay? Client is getting 257-259v and it is tripping. It is a rural location and rather not get DNO involved if it can be sorted on site. Did I read that right? Thanks
  17. M

    Henley incomer

    Does anyone know the BS number and charateristics of the big square henley incoming fuse used by the supply company. its about 6 inch square with side entry for the supply cable system is TN-S. There is no info on it and i take it the main fuse is inside its sealed so dont know the size. any...
  18. R

    Max allowed on 60amp incomer

    My cleint has a small holiday lodge and wanting to remove hot water cylinder and night storage heaters and replace with instanious water heater and panel heaters. As he is only in lodge a day here and there. The plan is to replace old fuse box with new 17th ed consumer unit. Which will include a...
    • Rayelect
    • Thread
    • allowed electricians' talk incomer max
    • Replies: 19
    • Forum: UK Electrical Forum
  19. E

    Domestic Incomer Fuse

    Hello every one, I would like to know the BS number of supply fuse that I came across in a house we recently rewired. The fuse has a glass cyliner filled with small multi coloured sand like grains most likely silicone. I have never seen this before. The rating is 60A. Any input will be highly...
  20. D

    Plastic water incomer-

    Hi lads. Doin a new build log holiday home. Water main is plastic into the cabin then goes Into a bit of surface copper round the tank then back to plastic for all hidden pipe work. Do I need a main bond?
    • Dave 85
    • Thread
    • electricians' talk incomer plastic water
    • Replies: 18
    • Forum: UK Electrical Forum

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