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circuit

  1. 2

    Lighting circuit advice please!!!

    Hello all. So I am sure the expertise on this forum will be able to decode this very easily. But it has completely baffled me. I'm in training so forgive the ignorance. Doing a bit of dead testing on a lighting circuit downstairs. Came across this at a light fitting. Appears that the colours...
  2. R

    Pump wired in 2.5mm on a shower circuit 10mm on Type B 40 acceptable ?

    Good evening all, I’m currently part way through my apprenticeship and we are working on IB, IN, IZ and IT and volt drop today. And it got me thinking I have seen a circumstance at work, where: A shower has been wired in 10mm T+E on a 40A breaker. But then from the shower isolator switch a 2.5mm...
  3. S

    USA RV Park branch circuit feeder size

    I am working on a RV Park and I have a question. I plan on installing 4/0 quadraplex AL URD cable to 10 pedestals on a 200 amp circuit and downsizing the wire to 2/0 Quadraplex AL URD cable for the last 4 pedestals. I have calculated voltage drop and everything is below 4%. Table 310.16 says...
  4. S

    40a circuit breaker6mm t+e

    I have had my kitchen rewired and plastered. I have had a 6mm t+e on a dedicated 32a circuit for a 60cm electric cooker. In hindsight, had i known at the time, i would have asked for a10mm cable to future proof the installation. The cables run from the consumer unit in the attached garage, into...
  5. TheCountSpark123

    If you can't split a circuit?

    I am a retired electrician and I've been out of the game for a while. My son asked me a question the other day and I wasn't too sure how to answer it so thought you lot might. He wants to use rails to supply 5 modules, each module will have 40 small actuators that operate at 24VDC at 0.9As...
  6. P

    Can I add PIV to lighting circuit with no RCD protection?

    As I've mainly done site work and moved into domestic recently, I'm a bit rusty on stuff like this, but if I'm adding a loft PIV unit to an existing lighting circuit via an unswitched fused spur, if the lighting circuit has no RCD protection am I allowed to install it? Same question for if...
  7. L

    Occasional tripping x one light circuit. But is a double feed the issue?

    DIY query Have narrowed down the source of an occasional trip to one light circuit which is a varilight v-pro master dimmer slave set up. This is one of 5 LED, low total wattage light circuits connected to one 6A RCBO breaker (so the issue could be a short or a ground leak). Zero problems...
  8. A

    Fault on Ring final circuit

    Please advise what I should test / check next. My usual qualified electrician who did all of the work here is in Ireland for 4 weeks and not contactable. I need to fix this asap. Ring final circuit tripping. I am not clueless and I have some test gear. Can fully isolate the supply with an...
  9. M

    Single Pole 50 Amp Circuit Serving for Electrical Dryer, Powers and Many Others

    Hi everyone. The title should sound crazy enough, but it's what happening in my 72-years old home we've purchased 2 years ago. I found the crazy wiring when I was just troubleshooting on a lighting which has been flickering, and finally completely failed recently. I recognized the lighting is...
  10. B

    Cooker circuit sanity check please.

    Hi, Just been scratching my head about this one and wonder if I've missed anything. A few weeks ago I installed a new circuit for a 3kw oven and a 950W microwave. Ran the circuit in 6mm T&E clipped direct on a 40A RCBO. Customer has reported that on maybe three or four occasions the RCBO...
  11. pnutttz

    How can I add a candle flicker LED to my static LED circuit?

    Hi everyone. I should start by saying I'm not sure I'm in the right place here (this isn't a householder issue - I'm making a Ghostbusters backpack for my son!), and that I have no knowledge at all of electrical circuits. I have a simple circuit with 3aaa batteries powering a string of static...
  12. J

    Industrial lighting circuit

    Hi guys I have some industrial lighting circuits to wire in a workshop and was after some fresh ideas/suggestions as to how i could best do this. Have done a few of these before and in the past i have sometimes run radials in SWA cable to single gang socket outlets. The High Bay LED lighting...
  13. G

    RCBO tripping 2 way circuit

    Since DB upgrade 2 way top stair light is tripping rcbo, it has a separate N&E to the feed supplying it im assuming this is the reason?
  14. PCBWay

    PCBWay Plug-In for KiCad

    Send your layout to PCBWay for instant production with just one click. Have you ever thought that when you complete the design on KiCad, you can place an order on pcbway with just one click? Now this idea is finally achieved. When you click PCBWay Plug-in button on Kicad, we will export...
  15. V

    1mm attached to a 20A circuit

    Hi all EICR today on a ground floor flat .. 1 issue .. At the consumer unit there was a 1mm core with its yellow (sleeved brown) in a 20A radial circuit mcb ( socket circuit ) and the blue in with its neutral. When I disconnected it I found it was attached elsewhere to this circuit .. not in a...
  16. mattgriff88

    Can I remove switch to leave circuit permanently on?

    Hi, I have recently moved in to a house where there is a switch outside the bathroom that controls the power to the shaver socket. Never seen this before and every other shaver socket I have seen is permanently on. Can I safely remove this switch so the power to the shaver socket is always...
  17. R

    DPDT switching branch circuit from one breaker to another?

    I’m planning a 240V welder circuit in a detached garage with a 100A sub panel. For the 160A or 180A output welders I’m looking at, the conductor can be #10, and a 30A breaker is probably OK, but a 40 would help the duty cycle. Conductor must handle welder's 1eff rating, breaker can be up to...
  18. S

    Shower circuit tripping

    Shower circuit (40a mcb 10mm cable 8.5kw shower ) tripping after 5 mins RESET trips after 2 mins...changed shower /cable /isolator still tripping I'm stumped
  19. impish15

    Testing on internal light circuit

    Hi I know I have to do more testing but I just want to see if there is something I’m missing. Customer said light fitting in the loft was crushed causing the breaker to trip. I thought easy fault to rectify which was very naive of me. I arrived disconnected the damaged switch which was in...
  20. hcanning2012

    Convert 50A to 20A circuit.

    Hi, I've a 50A circuit (looks like 6 gauge wire - see image) that used to service an old hot tub and I want to convert it to 20A 12/2 to service a garden shed instead. Add a light and outlet. I'm not an electrician. I've a panel outside where the hot tub was with 2x 50A fuses. Wondering how to...
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