circuit

  1. N

    UK Circuit with 3 switches and 4 lights no longer working

    Hi all. We have a complex circuit in our house which I believe has been wired incorrectly. Despite that, it has been working until I changed two light fittings at the weekend (these are temporary and will be replaced with new lights after decorating). This is how it's configured, with both...
  2. S

    Ring final circuit results.

    Hey guys as some of you will know I'm studying electrical installation at York college. I've been trying to get some practice in with my MFT. My results were for the ring circuit. r1. 0.65 rn. 0.65 r2 1.06 Sockets. I was getting in the range of 0.31 ohms and 0.33. I had to open the sockets...
  3. FlashGordon

    Automotive (bike lights wiring circuit)

    So, I am a relative beginner (only fiddle when needed and usually following clear instructions or diagrams) when it comes to 12v switches and relays, but I am needing some help with a set of switches and a micro relay I purchased from Amazon (those who purchase here know most stuff comes with...
  4. Brownie91

    5.0 Distribution circuit section, N/A on paperwork?

    Hi all, This may be a silly question but here goes. When completing an inspection report for a small domestic installation (EICR not install). Would you mark all tick boxes under 5.0 Distribution circuits as N/A seeing at this is for a circuit/wiring feeding another distribution board? Thanks
  5. T

    Stuttering short circuit in a single circuit (several sockets)? How to identify short circuit?

    Hello. There is a persistent short circuit on a circuit (a fuse switch). All plugs have been unplugged. All sockets are free. I have continuous beeping continuity and “30 Ohm” resistance on several sockets. I also have 30 ohms on one outlet, but a stuttering beep. Can I narrow it down by...
  6. V

    My outlet is on two circuits at once...

    I have an ancient home with knob and tube wiring, and a breaker box from the 70s. It's all a mess, with circuits powering random things on opposite ends of the house. The breaker box has breakers with multiple wires spliced or coming out of the stud and all the neutral studs are overloaded with...
  7. tony9i9i9i

    Proving power circuit is fine?

    I have a customer saying her TV keeps going off, I've been to visit 3 times, and the circuit has tested fine, with good continuity on the ring, and the voltage is bang on. I removed and few covers and all looked fine, the terminals were correctly tightened. Not complaining about anything else on...
  8. W

    Fault on lighting circuit

    Bear with me because this is long. So got an intermittent fault on the upstairs lights. Trips the mcb after a few hours, getting a reading of 0.01 mega ohms between live and earth at the board, tested cable going to db from first switch and it’s clear. Tested the cable going from first switch to...
  9. P

    12 volt bulbs on 240 volt circuit

    Hi just seen the bulbs on my outdoor Xmas lights are 12 volt 3 watt on 240 volt circuit. How can they be working? They do!
  10. B

    UK Circuit design for computer circuits.

    Hi Guys, I'm currently designing an installation that will be used to configure multiple pieces of electronic equipment such as PC's, Servers, All in ones etc. Its going to be set up in bays such as the picture attached. With it being a full socket installation I was hoping for some guidance if...
  11. G

    Issue with r2 reading on ring final circuit due to parallel paths

    Good evening, Been on and off on this project, they’re all brand new flats and now I’ve come back to carry out EIC tests. It’s all first fixed in steel conduit and have stud frames with caddy clips on, so naturally been told to earth back boxes. Before I left I mentioned to the QS running...
  12. R

    Is it enough to prove safe isolation on a circuit which is controlled by a PIR on a seperate circuit ?

    Hi Guys currently doing my apprenticeship and looking for some external advice regarding safe isolation. Situation is a circuit supplying some external street bollard lights and 1 or 2 street lamps. This circuit is fed via a single phase MCB then through a contactor all located in the db. The...
  13. L

    help with circuit design

    I have been asked to provide a lighting circuit outdoors for 18 lights on a canopy. The circuit is fed from a toilet block that has a 100A supply to the meter. The customer has now asked if they can have some extra sockets. They want a 16A commando socket around 60m from the board. They then...
  14. P

    Shared immersion heater circuit

    Hi everyone Is it permissable to connect 2 immersion heaters to one RCBO and supply cable? I'm installing a water cylinder (which has 2 immersions) in a new utility room, which used to be a kitchen. I want to repurpose the old cooker supply cable which is 10mm. If it's legal, I want to feed...
  15. T

    Filling out an EIC when multiple people have worked on a circuit.

    Hi quick question, we are a maintenance team in a factory, sometimes we have jobs that carry on to the next shifts, sometimes up to 3 people could be working on a job at different times, how do you go about filling out a certificate, should you just list all the installers and signitures on a...
  16. T

    Control circuit supply

    I have recently purchased a used three phase oven in good working order. The control circuit is 220 v and is supplied from one of the phases and a neutral direct from the mains board. I have been advised that for, safety reasons a 440v/220v transformer would have to be installed instead. Is...
  17. S

    GU10 flashing when turned on, work if load added to circuit

    A strange one in my kitchen. 3 sets of 2-way switched GU10 `Philips down lighters. ( no dimmers) Have been fine for several years. Last week the fan/light remote receiver, ( connected via a on/off wall switch, using live which also goes to lights, neutral permanently connected to lighting...
  18. M

    Remove outlet within a GFCI circuit

    I apologize for the repeat. I lost the responses. I need to remove an outlet in a gfci circuit to remove a cabinet. I need to know what to do with the wires. Thanks!
  19. P

    What is Maximum circuit amps?

    Compressor plate LRA 82, RLA 16 Fan FLA 1.6 Maximum circuit amps 21.4 Max fuse 30
  20. L

    Can i install a new circuit or do minor works on a plastic consumer unit under the stairs which is the only escape route.

    I know it's only a C3 but I've been to quote jobs where previous electricians have told the client that they have to get it replaced to comply with current regulations which is false and basically scaring the client to get more work. I'm pretty sure that's not the case, as its only recommended...
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