rcd

  1. B

    Is RCD protection required on SWA supply cable to EV?

    Hi all, I am at odds on whether RCD protection is required on an SWA of 14 metres, clipped direct under flooring direct from CU to an exterior Tesla EV charger. The Tesla charger is three phase and to be a 22kw supply at 32A. TESLA SPEC: The wall charger itself features a built in RCD Type A...
  2. rwkshaw

    RCD seems to trip without physically tripping???

    Hi, I seem to have an RCD that keeps cutting the power at random times without actually tripping, if I reset it, the power comes on and will stay on for anything from a few hours to a few weeks. I've been through all the obvious things, unplugging everything, plug in one at a time etc, nothing...
  3. S

    Type S RCD Polarity Clarification

    Given the RCD pictured below With the manufacturers instructions here: Am i right in interpreting that as well as being able to bring the incoming feeds into the bottom, i can also switch the LIVE and Neutral sides over, so that this arrangement would be possible? Forigve the crudity of...
  4. C

    NAPIT Certification Scheme faild napit annual assessment with silly mistake of using type AC rcd instaed of type A

    i have faild napit annual assessment with silly mistake of using on consumer unit type AC rcd instead of Type A rcd. i bought type A rcd but they wre type AC someone swap them inside the packege. but i understaind its my mistake i should have checked it. now i have changed them and sent in...
  5. frankbiganski

    Gas boiler on RCD but also connected to other wall outlets

    Hi, I have lifetime experience (50+ years) in United States with basic knowledge of split phase 120/240 volts replacing wall switches and sockets. We moved to the UK two years ago (wife was born here) and I am aware of the 240 volt system that's used throughout the UK. I let a flat and with...
  6. N

    Can we connect the 2 phases lines ( 110 V each ) to RCD breaker?

    Can we connect the 2 phases lines (110 V each) to RCD breaker? please advise ?
  7. strider6

    EVSE and RCD Questions.

    I'm obviously still new and learning about what I can and cannot do, but essentially I want to install an EVSE at my own house for an electric van, I intend to run a 6mm T&E in surface trunking/clipped direct, through a drilled hole in the wall and then out a wiska box through some flexible...
  8. V

    EICR code for no upfront rcd on TT split load metal board: poor install

    See this time after time - poor installation: new split load board on a re-wire tt installation. The main switch is not a time delay rcd. The board is metal and there are split load single insulated conductors before the 30mA rcd's. If these conductors touch the metal work the board may...
  9. Y

    Box ground causes rcd to trip at > 1amp

    I have just checked a double outlet and it trips at 18ma. It was supposed to be faulty. Washing machine had a bad heater which got replaced but using the same socket it kept tripping the rcd. Socket next to it worked okay. Replace double socket with a new one. At the same time ran an earth wire...
  10. O

    UK RCD sockets on RCBO protected circuit

    hi all come across a new build commercial office where radial circuits feeding electrak power track was protected by 32A RCBO at dist board and the electrak tap off leads terminated into RCD under desk sockets why install RCD sockets when circuit is protected by 32A RCBO is this install correct...
  11. F

    How to wire Hager CDA263U RCD?

    Can I connect the supply line and neutral to the terminals 2&4 and the load side line and neutral out of terminals 1&2
  12. M-B-Electrical-Services

    RCD protection for a temporary 16A commando socket outlet

    Hi all, Just a quick one regarding the need for RCD protection for socket outlets rated up to and including 32A. I have been tasked to install temporary power in the form of a single 16A commando socket outlet for the purpose of feeding a boiler to maintain heating in a building owned by the...
  13. W

    UK RCD 4 gang extension for use abroad when travelling

    Hi, just hoping for a bit of advice. When I travel abroad (Europe, predominantly Spain/Cyprus) I usually take a single travel adaptor and a UK 4 gang extension. As they're getting on a bit, I've just ordered replacements and am thinking of putting an inline, non latching RCD between the plug...
  14. M

    Trip MCB at times RCD too intervals days or hours; test if faulty appliance

    Hi I am asking for help as a novice and 1st time user of this forum. Recently started to experience tripping of MCB & sometimes with the RCD at random times, intervals can be days after resets or several hours. Could an appliance or appliances be overloading the circuit? How can I test an...
  15. B

    UK 3 phase rcd protection

    Hi everyone, I have been asked to pull in some new 3 phase supplies for 7 new welders which do not require a neutral connection. The client has specifically asked for them to be plug and play and rcd protected, which is fine as they are under 32amps. I will be running in 5 core swa's for...
  16. tony9i9i9i

    Faulty RCD tripping on the button but not via the tester

    What should you do if a client has a CU that is a split board protected by 2 * 63Amp 30mA double pole RCCDs, you took Zs and tested both RCCDs by their buttons before starting work. But on completion of work, one of the RCCDs, when tested via tester, would not trip, the other operated as expected!
  17. A

    Adjusting tripping time.

    Hi all, Curious one and hopefully some one of you could give me some advice. A customer has had a steeltech shed installed at their premises. A large one. Wants 3x light fittings and 5 double sockets intalled. There's an electric roller shutter door on the shed also to be plugged in. My plan...
  18. J

    S-Type RCD Selection

    I was wondering if someone might be able to help either confirm or change my understanding on the use of S-Type RCDs. I believe that they can be used to aid with selectivity and avoid potential nuisance tripping, providing the ratio of the rated residual operating current of the upstream S-Type...
  19. C

    UK Change RCD type at CU to enable RCDs at socket outlets

    Hello All, I am a homeowner (but not an electrician) and I am renovating a house that has an old CU containing MCBs and an MK LN5725 residual current-operated circuit breaker on the supply side (25A, 30mA trip current). The RCD is there because some of the circuits supply power to outbuildings...
  20. cliffed

    RCD Tripping intermittently

    Called out to fault on RCD tripping maybe twice in a month for sometime. Did all the tests & found RCD was faulty, Refitted a new Rcd Type A which made matters worst. So refitted original RCD Type AC for the time being. Insulation Resistance measurements were 20 M ohms. Ring continuity fine...

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