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rcd

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  1. G

    UK RCD sockets regulation

    Can anyone tell me the latest regulation for RCD protection on socket outlets, I believe it's required for sockets up to 32A but I'm told it applies to all socket outlets, we have to install a 63A 5 pin socket located outside. Thanks in advance
  2. B

    N/E fault IR=0 - RCD won’t hold

    Hi all, After some options/opinions on fault finding N/E fault on ring final as fairly newish to being out alone. Customer wants to upgrade from rewirable CU to RCBO so fairly old wiring but no signs of cable breakdown or anything totally messy on inspection. This circuit basically holds...
  3. E

    EIC additional circuit main switch/switch-fuse/circuit breaker/RCD

    When doing an EIC for an additional circuit (which only covers that circuit), does the 'main switch/switch-fuse/circuit-breaker/RCD' section refer to: a) the MCB you're adding for the new circuit b) the existing main switch (whatever it is) for that board c) [if the DB the circuit is added to is...
  4. baldelectrician

    EICR question, OLD AC RCD- code 3 or no code?

    With regards to Regulation 531.3. 3 of BS 7671:2018+A2:2022 Older AC type RCD's are prone to being blinded by dc leakage from other items plugged in to the property. In other words this RCD may fail to operate when other electronic items are plugged in which leak DC in to the mains. Regulation...
  5. Lainan01

    Real life examples of RCD fault

    What’s a real life example of an imbalance between live and neutral? For example, a faulty tumble dryer can trip a RCD on a split board - so I would assume there is an imbalance because of the difference in the magnetic flux between the Live and Neutral coils. But what would be the actual...
  6. M

    RCD trips when screw touches lug

    DIY question. I have been changing old metal socket faceplates to the normal plastic ones. All are working fine except the faceplate of a fused switch. Everything works fine when it isn’t screwed. It is a fused spur for a light in the conservatory. The light works fine when the screws are off...
  7. driverJohn

    TT earthing enquiry.

    Hi do tt earth systems highly require a rcd, and if not are upfront rcds a must in the tt earthing systems? Cheers
  8. S

    RCD trip when power cut occurs

    Hello. we have had a few powercuts over past few months and am in middle of one at the moment where power has gone off a few times while DNO are trying to resolve issue. House is a mid 1980'S PME and on housing estate. Current setup is single RCD with mcbs. Am currently waiting for spark to...
  9. Simonson82

    Dual rcd board to rcbo

    I've got a dual rcd mk sentry board that I want to inverter into an rcbo board. If I link the two neutral bars from the main switch is this OK to do regs wise? Thanks
  10. J

    Reported content: Post in thread 'Domestic - RCD tripping- earth neutral fault'

    Post in thread 'Domestic - RCD tripping- earth neutral fault' by Guest has been reported by Jack898989. Reason given: Content being reported:
  11. E

    RCD tripping on test

    Hi, while testing the new board I installed I got to the live testing at the sockets one of the RCD's kept tripping during the loop test, the other ring tested fine so it's not the tester, the insulation tests where all good. Unfortunately I didn't have a residual current clamp meter with me, to...
  12. B

    PV and not and RCD protection.

    Had a customer ask for RCD to be changed to Type A as he has had a company install a PV unit which they have left with the spur switched off as new regulations state that PV units must have a type A RCD 🤔. Has anybody else had this situation??
  13. B

    UK What’s the correct way to enter RCD’s on a split load board on a schedule of test results?

    Would entering each RCD as a line on the schedule of test results be correct? If so, what would be entered in boxes such as Zs?
  14. S

    connecting scheme of RCD with UPEU, in Huawei APMH30 BTS3900

    Does anyone have a scheme connecting RCD with UPEU, with details on how wires are connected on reglette and further on UPEU. Can someone explain how alarm is generate when RCD goes down, and where is RCD stationed in rack? Here is the picture of ports on SLPU: which should be connected to UPEU...
  15. Q

    UK Can you add additional sockets to non RCD protected circuits via RCD spurs or sockets?

    Evening all, If a socket circuit is not RCD protected via an RCD/RCBO and there isn't the option of fitting an additional RCD enclosure or fitting RCBOs, is it permitted to add additional sockets to the circuit via RCD spurs or additional RCD socket outlets? (type A of course)...if the sockets...
  16. M

    3 phase RCD question

    Hi everyone, each leakage question here. I am needing to run some LED screens, professional type, not TVs. These are 500mm x 500mm panels and traditionally have 2/3mA leakage per panel. So we generally have a 63A three phase distro with a 300 mA on input and multiple outputs protected by 30 mA...
  17. HappyHippyDad

    Difference between 1p+N and double pole RCD

    I need to replace a Hagar RCD (model number CN284U). This is a type AC RCD and I wish to replace it with a type A. The model number for the Type A equivalent is CNA584U. They are both 100mA, 100A, S type. The only difference being is that the Type A RCD is referred to as 1P + N rather than...
  18. B

    Whirlpool bath. Is there legal requirement for additional dedicated RCD even if we have Double RCD CU?

    Hi to all. Is there legal requirement for additional dedicated RCD even if we have Double RCD CU? Our whirlpool bath has ambiguous instructions: first it saying that it has to have separate RCD outside. Then it says "IF separate RCD installed" like if there as an option not installing it. We...
  19. I

    Adding RCD protection to obsolete MCBs

    Best way to add RCD protection to specific circuits in an old Siemens DB which I’m told is now obsolete. Install an additional enclosure adjacent to the DB to hold new RCBOs and feed these from the obsolete MCBs? Any other ideas?
  20. A

    Complex Boiler/Light RCD trip issue

    Hi, I’d really appreciate some advice or suggestions as to what could be causing an ongoing issue I have with my RCD tripping. My RCD trips when I turn my bathroom light off when the boiler is on. It’s worth noting it’s not exactly every time and sometimes when the light has been left on for a...

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