main

  1. R

    How to conduct safe isolation on this main switch ?

    Hi all, if I cannot access the line side of a crabtree 100A DP main switch. Would someone enlighten me how to conduct safe isolation on this installation. Would the main fuse need to be removed ? Thankyou.
  2. G

    Moving a ring main socket further along a wall

    Hi all, I'm planning to remove a stud wall seperating my dining room and kitchen. On the dining room side of the stud wall, there is a double socket which I want to move about 2 feet approximately along, and onto the back wall. The wires will be coming down from the ceiling as they all do on...
  3. J

    C40 rcbo on ring main changes to b32 causing nuisance tripping

    Ring main was on a c40 rcbo so I tested the circuit everything was fine and dropped down onto a b32, It’s quite a long circuit but only serves about 10 sockets.The rcbo stays on but the client says trips frequently, I’ve been back and the rcbo stayed on the whole time, I then left and over the...
  4. L

    Anyone know more about these OLD BNO main isolators ?

    Ive mentioned it in another thread but thought I would make a specific post !! From a quick look its a "piston type " affair .The leaver lifts up and pulls out the rod in the middle .A bar has to be inserted to the rod that then allows the lever to roll upwards pulling etc . I'm old...
  5. D

    Adding to an existing ring main, but no spare ways in the C/Unit

    Hi guys I am looking to add 4 additional sockets for a room that is being converted for a bed ridden person. The room at present has no sockets in it, would it be possible to add to the existing ring main in the consumer unit (this is in the room). The load would be very minimal couple of...
  6. michaelw6

    Outside socket spurred from the ring main. query! (I am a long Serving electrician)

    Ok i may get slated for this one but here goes; A bit of background info first. Its been a while since ive looked at my iee regs, and ive not done my 18th edition but get the updates. i no longer practice much electrical due to a career change. But for friends, family old customers when i get...
    • michaelw6
    • Thread
    • electrician long main outside outside socket query ring ring main socket spurred
    • Replies: 12
    • Forum: UK Electrical Forum
  7. J

    Wiring an MCB beetwen RCD and Main switch

    Good evening, I wondered how the MCB between RCD and the Main switch is wired while watching this video. Photo attached. I assume a busbar link is connected to the main switch and mcb. Do the line conductors and the busbar connected at the same terminal and then go to the RCDSs? Link to the...
  8. D

    Main Electrics Isolator Switch

    Hi, I have received conflicting advice about Main Isolator Switches and would appreciate forum member's help to plan a way ahead. Looking to the future I might need a 7.4kW/32A charging point and the garage isolator is only 60A. 1. Recently, during a kitchen refurb, double pole Mains...
    • Deleted member 155212
    • Thread
    • electrics isolator main switch
    • Replies: 5
    • Forum: UK Electrical Forum
  9. D

    6 swipe main shut off - overload code?

    Good afternoon - we're considering adding an additional breaker to our "main service panel" which is where the meter is located. That panel has 6 slots (I guess 12) with 5 double breakers currently. One breaker is 90 amps which feeds our interior panel which has lights, cook top, A/C condensing...
  10. J

    Kitchen rewire - old ring main - new radial

    Hello, Last year I had some electrical work completed in my house (New CU, SWA for garage, downlights) I informed the electrician that I will be renovating the kitching at some point so he ran a new kitchen radial circuit for sockets and hob and oven circuit. These are on seperate RCBOs, which...
  11. T

    Replacing MK Consumer Unit. Main switch position

    Hello mates. i have an MK CU to replace. As you may know, the main switch in MKs is on the left hand side. There's no way to replace the meter tails. Is there another manufacturer that has a left-hand main switch CU, or a flexible position option? Thanks muchly!
  12. electrical mt

    Main incomer tripping

    I was called in a block of office saying they have a problem with the main incomer. During the night nit all nights randomly the main switch in the switch gear is tripping. At night the offices are closed only the survers are running. Has anyone encountered this problem? Or what test you suggest?
  13. cliffed

    Zs on ring main high

    NICEIC visit the other day… pulled up on length of RM circuit …. Zs 1.30 ohms… RCBO 32amp B type…thoughts on this
  14. R

    What does the main fuse protect?

    From another thread: I'm thinking about this and it's got me all confuzzled. Don't fuses protect anything downstream ie my laptop's charger has a fuse that protects the charger cable, the socket has a breaker that protects its wiring, the boards wiring has a main fuse that protects it from...
  15. V

    PV installation - dedicated circuit, or from sub main board? MCS query

    hi thank you for help in advance have a potential pv installation for a garage roof that is some 60m from the main house (main incomer in the house). Spoke to a napit/mcs worker - he said the pv installation has to be on a dedicated circuit. My interpretation is that a dedicated circuit on the...
  16. Mark Wright

    Main Eearthing Conductor - Fabric ????

    See picture below the Main Earthing Conductor is some kind of Fabric?
  17. I

    New SPD Regs for Sub Main

    Now that SPD's must be fitted regardless, how does this stand from a sub-main perspective? Went to look at a job and they want a supply to a pre wired Shepherds hut 50M away with no SPD as it has been sat unconnected for a couple of years. The main incoming is entering an old barn that has a...
  18. S

    Ring main questions.

    Hi all, I’ve had some good advice here in the last week or so which has made me ask a few more questions. 1. Ring main uses the old Red and Black PVC cables, is it okay to add on to a ring main with newer cable ? 2. Is it the norm? to use Wago’s to split a ring main and extend ? 3. My sockets...
  19. N

    RCD Tripping when bypassing kitchen circuit straight from main fuse

    Ran a 4mm straight from main fuse removed busbar and put 4mm into bottom of breaker, RCD keeps tripping
  20. cliffed

    Main switch & Rcbo’s

    Special location a Static caravan TT System, CU fitted Main Switch then RCBO’s any comments
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