circuits

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  1. R

    Power Panel Changes Voltage with Branch Circuits

    I have a Single Phase Power box for a townhouse. When I read voltage across the Hot legs (A) and (B) to ground I get 123 volts with the main breaker turned off. With all the circuit breakers turned off and powering up the main breaker to the panel I still have 123 volts across both (A) and (B)...
  2. B

    RCD protection in industrial setting circuits

    Hi All Hope someone can help In industrial setting are all circuits required to be RCD protected ? Or is it just socket circuits ? Thanks in advance
  3. N

    25 ohms Zdb + same reading for all circuits

    Hi everyone, I have a particular job visited this morning, that on all circuits, at each point, i got a reading off around 25ohms for a earth fault loop impedance test(zs). I then thought to do the same at the DB for those circuits. Again, same reading was obtained. I then turned off the...
  4. O

    What's common practice with IR tests on lighting circuits?

    I had just installed a heat alarm on the downstairs lighting circuit during a kitchen rewire. The new kitchen ring / cooker circuit I tested IR for L-N and N-E at 500v, fine, but the DS lighting circuit consisted solely of 21 LED downlights, in various rooms and the alarm. All of which say do...
  5. S

    AFDDs for single-socket circuits

    Haven't been on here for a while, so sorry if this has been discussed before. BS7671 2018 + A2 Regulation 421.1.7 recommends AFDDs for "single-phase AC circuits supplying socket outlets..." (requires in certain premises). My intention is that from September 27th I will recommend them to...
  6. pirate

    Just a wee take on wiring power circuits and alarm circuits in a garage

    I thought I would take a few minutes to give my recent experience in wiring a large garage for power and an alarm circuit. This relates to clipped direct for all cables, using Linian clips. A laser round the garage, drilling the 6mm holes. clipping the 2.5mm to the brickwork all went very well...
  7. A

    7. 3 kw INDUCTION HOB

    Can I run a 7.3Kw induction hob off of 2 x 16 amp circuits single phase I'm not sure what size cable is installed, I will check. Would I be be able to run with the 2 x 16amp breakers or should I install a single 32 amp breaker with separate RCD? Thanks in anticipation.
  8. timhoward

    CPC common to 2 circuits...

    When I checked out this job I had a false sense of security from a recent competent looking EICR and two new CU's that looked to be fitted to a high standard. Most of the property does have a CPC on the lighting circuit, it's just this one room with a flat roof above that doesn't. This is where...
  9. D

    UK Radial Circuits Wired in 4mm and 32A MCB

    Guys needvadvice please I was asked to carry out an annual inspction of a DB recently There are 12 in number radial circuits suppling sockets wired in 4mm singles protected by 32A mcb the cables are enclosed in metal trunking and supply 13a socket outlets , are the mcbs now overated as the...
  10. L

    Electric shower case: short circuits (?) and RCBO

    Hello, I have just posted in the Electrician's section one photo and two videos of what I believe to be a dangerous situation of short circuits happening within a shower unit. You can see (also here attached): 1) Extensive burn marks on the plastic cover; 2) A vast amount of water leaking from...
  11. L

    Ring circuits to be retired?

    Could the 30% leakage requirement on rcd, s, combined with the inevitable increase in kitchen appliances with intentional leakage built in, force designers to replace rings with radial circuits?
  12. H

    Multiple circuits passing through an AC isolator

    Multiple circuits passing through an AC isolator what code is this on a U.K E.I.C.R?
  13. I

    Distributing kitchen appliances between circuits

    We're renovating our kitchen, and I have parts of the wall open and can rewire circuits right now if needed. We currently have three 20A circuits serving the kitchen, as follows: *Circuit 1: fridge, microwave, toaster, outlets. *Circuit 2: disposal, beverage cooler (5 cu. ft. mini fridge)...
  14. R

    How Many Circuits for basement

    I’m working to wire my basement. I’ve been researching codes, pulled my permit, and have discussed my project with the inspector. With this being a basement I know I will need GFI breakers. First question, can I put lights on these same circuits? Second how should I break up my circuits...
  15. F

    How many circuits do I have

    I want to get an EICR on my house, the cost seems to be based on how many circuits I have - what do I do to find out how many circuits I have?
  16. M

    Multiple dimmable switches and circuits connected

    Getting around to bedroom lighting, what I would like to achieve is: Circuit 1: pendant light (centre of main ceiling) Circuit 2: LED tape and LED downlights (in dropped ceiling with tape in coving and downlights in the dropped ceiling) Circuit 3: bedside light left Circuit 4: bedside light...
    • Mjward
    • Thread
    • circuits connected dimmable multiple switches
    • Replies: 9
    • Forum: Lighting Forum
  17. D

    Adding a dimmer to light switch controlled by two circuits

    I have a light switch in the island in my kitchen which powers two chandeliers located above the island. In order to cut the power on/off for this light switch I must cut off two circuit breakers (numbers 25 and 29) located in the breaker box. Also controlled by breakers 25 & 29 is the front...
  18. G

    Curr/Volt profile in circuits with Drop-in T8 LED Replacements vs normal T8 Fluorescent?

    Hi, I'm troubleshooting a 'smart switch' issue which is connected to an existing fluorescent 4' 2-bulb (T8) fixture where I have replaced the fluorescent tubes with LED drop-in LED T8 tubes (no re-wiring necessary, so ballast is still in the circuit). Vendor indicates that the switch may be...
  19. Calebp43

    What size cable do you use for new lighting circuits?

    So im a third year apprentice and should be qualified next year (whoopee). One thing has always made me curious and that is what cable size should we be using to rewire or in a new build for lighting in 2021? OF COURSE this depends on the load and how it's installed etc but in general what size...
  20. M

    Control one light from two circuits

    I have four exterior 110v light fixtures in the front of my house in series on a single switch. On a different circuit, I have six 110v back yard light fixtures in parallel on a single switch. I want to add another light fixture on the side of the house that will turn on if either or both...
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