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  1. 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...
  2. 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
  3. 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...
  4. 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...
  5. 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!
  6. 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?
  7. 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
  8. 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...
  9. 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...
  10. Mark Wright

    Main Eearthing Conductor - Fabric ????

    See picture below the Main Earthing Conductor is some kind of Fabric?
  11. 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...
  12. 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...
  13. 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
  14. cliffed

    Main switch & Rcbo’s

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

    EIC additional circuit main switch/switch-fuse/circuit breaker/RCD

    When doing an EIC for an additional circuit (which only covers that circuit), does the 'main switch/switch-fuse/circuit-breaker/RCD' section refer to: a) the MCB you're adding for the new circuit b) the existing main switch (whatever it is) for that board c) [if the DB the circuit is added to is...
  16. P

    power a second consumer unit in the garage from our main consumer unit.

    Hi can you power a second consumer unit in the garage from our main consumer unit. We have a big armed cable from the main consumer unit into the garage and can we connect this to a second consumer unit? The armed cable current runs our solor and comes from the fuse in the picture attached.
  17. J

    Main panel upgrade for Solar ?

    Hello, I am a homeowner and have a solar project coming up. I intend to install a 9kw solar system but I am not sure if I have to upgrade my main panel or not. I have a 200A main panel with only 3 breaker slots, 1 is 100A double pole breaker feeding the sub panel located inside the home, the...
  18. D

    LV fault tripping HV ring main unit

    Hi all, I have been on a site repairing damage caused by travellers collecting copper for the last week. We have found and replaced cabling to get the site up and running. Power has been on for a few days but today the 11KV ring main unit tripped. This feeds a transformer attached to the main...
  19. C

    Can I spur a socket from an existing fused spur on a ring main?

    I'm sure this has been asked before, but I just want to confirm: Currently I have a spur leaving a socket in the bedroom, into a 13A Switched FCU and running up to power a double socket in the loft. I now want to locate a socket in the old boiler cupboard/airing cupboard to power a tumble...
  20. D

    Sub main supplying new build

    Good morning all, long time reader first time post so looking for some help I’m qualified as an electrician but haven’t worked as a sparky for 15 years or so. I’m just starting a self build and going to do as much as I can but over thinking that the first hurdle New main in to the house was...
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