circuits

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  1. happysteve

    Restoring circuits after temporary "distress change"

    Am currently pondering the following situation: - Single phase PVC board, domestic, in an area where TN-C-S is the norm (underground supply etc). - Most circuits protected by 30mA RCD, except lights (B6 60898 MCBs). - Pre-checks before simple job (on garage circuit) reveal no earthing...
  2. CokeCanBrad

    UK Am2 Breaker Selection

    Hi I want too do my AM2 In the future. I want too know the breaker selection for the circuits in the AM2, an acceptable answer (for me.) will be from a recent am2 Passee (successful candidates only.). The circuits are as Follows:- D.O.L Starter, with motor. Carbon Monoxide Detector Ring Final...
  3. Iain Stewart

    How to plan a rewire and new consumer unit. How many circuits, what cost?

    Hi, we need some advice on our scenario with regards to our rewire plan. I will get this out of the way first... We are planning to put the house up for sale. I know people will say let the new buyer do the stuff but in our area there are a few houses for sale and they are all fairly up to...
  4. D

    New house unknown circuits

    Hi - I just moved into a new house. The box has a circuit labeled "Central Vac" and 2 labeled "Septic." The house does not have a central vacuum. I do have a septic system that as far as I know does not use a pump or any electrical power. Any idea why these circuits would be there?
  5. D

    Multiple Exterior Lighting Circuits

    Hi all, Having a brain fart... Looked at a job today, have multiple exterior lighting circuits (4x MCB'S). Can see why there is multiple, as previous electrician was worried about cable lengths etc as the property is quite large. But seem to have multiple Photocells and timers controlling...
  6. A

    No CPC in lighting circuits / Fire damage

    Good evening following a visual inspection in a property that had an electrical fire in the fuse board area obviously i could not actually test anything, but visually identified that the lighting circuits had no earth (not even cut back) now the insurance company ideally want a new...
  7. B

    Correct switches for 2 way pendant + bedside lamp circuits?

    Hi. First post here. Background I have a relative who is an electrician and is about to re-wire our home as a favour. I said that I will order and pay for all of the parts - so that they are here in on-site when he arrives to begin work. I have already ordered a Hager consumer unit; the 10...
    • BillMcLeod
    • Thread
    • 2 way circuit circuits correct lamp light pendant switches
    • Replies: 8
    • Forum: Lighting Forum
  8. T

    multiple circuits stopped getting power same time, replaced all, still no power??

    video explaining/showing problem View: https://youtu.be/VjtsPzzZYrQ this is a eaton cutler hammer circuit breaker. The house was built in 1969 but the breaker was upgraded to this eaton 9 years ago when i bought it. House uses mostly older outlets that are 2 prong, not 3 prong. HOuse does...
    • turnelectr
    • Thread
    • circuit breaker circuits getting multiple no power older power replaced still time
    • Replies: 10
    • Forum: UK Electrical Forum
  9. D

    AFFD's and new circuits

    Hi All, I'm a quilified electrician that's been office based for the last two years, I'm a little out of touch so please go easy if this is an obvious question! I'm having an extention on my home this year and been thinking about additions and it got me thinking, are AFFD's needed when...
  10. C

    Emergency circuits

    Ok, say you had a building that needed backup power. Does British Code require that the loads be subdivided onto different branches and automatic transfer switches based on type and priority?
  11. S

    Havin random breaker fault issues with my home where random circuits trip breaker with no pattern .

    So bought my house in june . When i moved in I hooked ac window unit in my bedroom it tripped the afci breaker for that circuit so I temporarily ran extension cord from spare room to my bedroom to solve the issue . After a week i decided to try hook ac up normally again . Never tripped breaker...
  12. P

    shared neutral in lighting circuits

    I need some help in deconstructing the following ( please see photos of upstairs downstairs switches ) as I don't know what the circuit diagram would look like in this case? It works perfectly well Is seems to be a shared neutral circuit but does not follow the normal convention as shown in the...
  13. C

    Circuits for Motors- how to in the UK?

    How do you size the MCB, wire and protection for a motor in the UK/Europe? How is it typically done? ............................................................................................................. If anyone is curious here how its done in the US: You size the conductor based...
  14. Midwest

    Emergency Lighting Circuits

    Having been at present place of work, for just overs a year now,just started to feel comfortable with the place. It’s predominantly a care home, and has all the normal infrastructure in place. I've never down much work with emergency lighting, other than installing it. Can anyone explain the...
    • Midwest
    • Thread
    • circuits emergency emergency lighting lighting
    • Replies: 11
    • Forum: Lighting Forum
  15. W

    Gym with lighting over 4/5 circuits and 2 mains

    Hello, currently working on a gym with 4/5 lighting circuits across two mains boards I’m wanting to put some emergency lighting in there and I’m wondering how I do that with this number of circuits across different rcds thanks in advance
  16. A

    Earth Fault Loop Impedance Test for lighting circuits

    Hello guys, Do you do Earth fault loop impedance test for lighting circuits during periodic inspection ? do you measure it at the lighting point? what is the percentage of lights you test? Thanks alot in advance
  17. HappyHippyDad

    Global Insulation resistance <1MΩ but individual circuits are all > 1MΩ

    With regards the title is the reason for this because the circuits are all in parallel? I am talking in relation to a L/N - E test. If Rt = global resistance for whole CU and R1, R2, R3 = L/N - E resistance for each circuit then am I right with the following: 1/Rt = 1/R1 + 1/R2 + 1/R3 So...
  18. HappyHippyDad

    Can radio linked smoke alarms be on different circuits, including a ring?

    I have just been to look at a job were the builder has started the first fix as I was unable to be there. He has forgotten to put in a cable to the heat detector in the kitchen, partly my responsibility as I should have reminded him more fully. My plan is to have it radio linked to the hallway...
  19. Power Calculations in Circuits | Electrical Training Video

    Power Calculations in Circuits | Electrical Training Video

    This video explains power calculations in circuits and how to use the calculations. Trainee Electricians studying for qualifications such as NVQs and other electrical courses may find this helpful.
    • Lou
    • Media item
    • circuits electrical videos trainee
    • Comments: 0
    • Category: Trainee Electrician Videos
  20. Electrical Circuit Components Overview

    Electrical Circuit Components Overview

    Easy to understand video lesson in Electrical Circuit Components. Provides a good overview of components including the resistor, capacitor, inductor, transistor, diode and transformer. A good source of information for Electrical Trainees on NVQs and other courses.
    • Lou
    • Media item
    • circuits electrical trainee nvq
    • Comments: 1
    • Category: Trainee Electrician Videos
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