circuit

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  1. D

    Machine Safety Circuit: Fuse Integration Query

    Hello Everyone, I have a technical question that I hope someone can help clarify. We're currently facing an odd issue with a machine equipped with a safety relay and interlocks. The interlocks have been failing, seemingly due to an unstable or 'dirty' power supply. While the ideal solution...
  2. Z

    Lights and sockets on one circuit?

    Hi guys. I had an inspection yesterday, where the lighting and sockets are in one circuit for each floor. There are 3A fused spurs for the lights. I also need to replace the consumer unit with 18th edition one. How would you code that? Any advice on the consumer unit would be appreciated. Thanks
  3. gjgjedi

    2 our of 3 sockets in 5 amp circuit not working

    Hi, Flat recently gutted and rewired from scratch. Livingroom has two switches, one controls the main light, one controls a 5 amp circuit with 3 sockets (3 round pins). Only just got round to testing it (a year later...) and 1 socket is working, 2 aren't. Any ideas what could be the issue? Not...
  4. P

    Ring Final Circuit (RFC) versus Radial. Yes, again.

    This is a topic that comes up a lot and seems to attract near-religious levels of fever in how folks argue over the choice of circuit for UK sockets. However, often the arguments are ill-informed or they veer off in to pointless corners, or sometimes get personal. This is my attempt to put a lot...
  5. CopiamElectrical

    Ring circuit fault, High RN

    Hey there, Sorry I’ve just joined up. I’m a qualified electrician/Electrical engineer. Recently sat my 2391-52. My question is I had a fault which I couldn’t find or rectify during a periodic test that I carried out yesterday (tenant property) occupied. Circuit: Ground Floor Socket 32A...
  6. 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
  7. I

    Extent of schedule of test results for new circuit in DB

    Hello, I am in the process of training to be an electrician and have a question. When filling out a EIC for a new circuit am I required to test all the other circuits in the board as part of the schedule of test results or only circuits I have installed/altered when completing? If just my new...
  8. T

    Wiring Emergency Lights With Normal Lights on the same Circuit?

    Hey Everyone, Currently at work I've been tasked with wiring the emergency lights. As I've never done it before, and my foreman wants me to learn how to do it. It's wired in a way he's not familiar with, but he eventually got his head around it. It's maintained em lights wired with normal...
  9. G

    8/3 for a 50amp rv circuit?

    I have a chance to pick up 50ft of 8/3 for $100. What's the risk of using this for my RV, 50 amp circuit? Here's the deal though. I have no plans to live in this RV. I just want to run the refrigerator and keep the batteries charged. Maybe run one A/C if I'm working in it. Never use a hair...
  10. Lainan01

    Maximum Zs on circuit protected by RCD - 1667?

    Does a RCBO protecting a single circuit mean it can have a maximum Zs of 1667 Ohms since it's being used as fault protection?
  11. S

    How to co-ordinate circuit breakers trip for overload and short circuit?

    Can 50A B type circuit breaker be coordinated with upstream 50A C type circuit breaker to trip earlier on shorts and current overloads?
    • SparkyAus
    • Thread
    • ausie elec breakers circuit circuit breakers how to overload short short circuit trip
    • Replies: 1
    • Forum: Australia
  12. S

    Fuse to Circuit Breaker Equivalence

    Replace of 45amp Fuse with 50amp CB on 10mm2 cable? Is this okay because of the 0.9 derating of fuse to overloads and because 10mm2 can handle 50Amp current. Installation in air equivalent double brick unit?
    • SparkyAus
    • Thread
    • ausie elec breaker circuit circuit breaker fuse
    • Replies: 5
    • Forum: Australia
  13. M

    Bathroom fan: do UK regs require connecting via lighting circuit?

    Hi, I've just had some electrical work completed in the bathroom; I've recently refurbished the bathroom, replacing the old electric shower with a mains/mixer. I had bought an inline fan and a separate humidistat/run-on timer module with the idea that it could be installed using the old...
  14. D

    LED lighting Mains and 12volt DC on same circuit

    Hello I have recently moved home and I looking to upgrade lighting across the house to LED. In the kitchen I have found that there is installed a mains powered lighting circuit which serves five LED lamps (surface mounted and recessed) Included within the same circuit is a junction box into...
  15. J

    Re-wiring socket circuit certificate

    I’m level 3 qualified electrician been doing for couple of years still training for my nvq and 18th I work for a company where I change db full house rewires very competent in my work just need to know would I be able to certificate my own works or need to wait till I’m full qualified as I’ve...
  16. R

    Boiler, programmer etc. via immersion heater circuit?

    Can I supply my central heating (programmer, two port valves and boiler) via a fused spur taken from the immersion heater circuit? They’re currently supplied from a fused spur taken off the ring main; however, kitchen wall’s are being moved around. There is nothing else on the immersion...
  17. J

    Could somebody please tell me what the name of the below circuit is please

    Hi all, does anybody know the name of this circuit and how it operates and the purpose of each component please? any help is much appreciated. Thanks in advance
  18. LukeL81

    Circuit Design - HMO refurb

    Hi Pretty new here, so not sure if this question goes into this thread I am not an electrician; however, I plan to integrate IOT devices and smart energy meters into the electricals of a house of multiple occupancies. The house will have six bedrooms, 2 on the ground floor and 4 on the first...
  19. J

    Could somebody please tell me what the name of the below circuit is please

    Hi all, does anybody know the name of this circuit and how it operates and the purpose of each component please? any help is much appreciated. Thanks in advance
  20. J

    Could somebody please help me understand this circuit?

    Could someone please explain to me what this circuit is used for? I believe it is a full wave bridge rectifier but I'm unsure as to what the zener diode is used for in this arrangement? Thanks in advance

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