circuit

  1. 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...
  2. 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...
  3. 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!
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. S

    GU10 flashing when on, un til extra load added to circuit

    Also posted in DIY. strange one in my kitchen. 3 sets of 2-way switched mains 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...
  10. 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!
  11. P

    What is Maximum circuit amps?

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

    External halogen light wired directly to hallway light circuit - No isolater / switch

    Hello All, I hope that asking this does not annoy too many Members who think that the answer should be obvious to me: Last night at my next door neighbour`s house who is away on holiday for the next 12 days one of his external halogen PIR controlled lights above the front door came on and...
  13. 1

    12v Auto circuit solution sort! Dodge Ram1500

    Dodge Ram 1500 Gen 4 rear lights conversion (CAD import); Problem. When I brake my rear brake light come on but so do my indicator lights (they don't flash at this time). So I have a wire along it travels a brake signal and a turn signal, when either of those functions are operated. This wire...
  14. K

    Circuit design calculation

    I have a question i hope someone can just give me a little clarification on . When carrying out preliminary cable design for a given circuit we use this formula = ( milliohms per metre x Length x multiplier Factor for maximum operating temperature ). Do we still need to use the the maximum...
  15. stepheng74

    Pir light circuit on 24/7

    I have just turned up at my parent house and they've tried to replace the old pir sensor but now the floodlight is on 24/7. I've no multimeter and no idea which is switchedlive. can I just take out one of the live feeds and put it in Lout, and if it's still on 24/7 try the other live instead...
  16. W

    Using existing oven circuit for 2 ovens

    Hi, Can 2 double ovens both 6.3kw (12.6kw combined) go onto an existing circuit which is 10mm2 t&e, 45a DP switch, 10m length into a 32a MCB at CU? Haven’t employed an electrician yet to be able to calculate and want to buy the 2 ovens with our new kitchen on the finance. Really hoping one of...
  17. S

    Definition of own circuit

    H5 relating to an immersion heating over 15 litres of water says: Should be supplied by their own separate circuit. No mention of sub circuits, nothing. A final ring with 13A mcb off the ring, then a 20A switched-cord outlet connection unit complies. It then has its own separate circuit. A...
  18. R

    How to track down a bad neutral in a home electrical circuit

    Ok, please be aware that I am a 'do-it-yourself-er,' so if this isn't the right place to be posting this thread, let me know where I should be posting it. The other day, my wife plugged in the vacuum cleaner and the whole living room circuit went dead. I figured that it was just either a...
  19. S

    LED strip light load on 5amp circuit

    Hello, Newbie here. Tried to find the answer through searching, apologies if I've missed it. We are refurbing our house. I want to install RGBW LED lightning. 3 zones: A) Round the lantern roof light, B) Kitchen cabinets and Island C), Snug room (TV and cabinets) I would like them switched...
  20. D

    Two Pages for circuit details and test results

    Why is there now two pages, one for "GENERIC SCHEDULE OF CIRCUIT DETAILS" and one for "GENERIC SCHEDULE OF TEST RESULTS" before it was all on the same page GENERIC SCHEDULE OF TEST RESULTS", which had "CIRCUIT DETAILS", on it, this means writing the cicuits twice?
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