rcd

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  1. G

    UK RCD on bathroom ceiling?

    hello im an industrial maintence electrician (mainly emergencies in factory processes & HV work) I do very few domestic jobs - i did pass my 18th edition in 2019 but memory is very vague doing a bit of work in my home and removing an electric shower and fitting thermostatic & also fitting a...
  2. SJD

    UK Identification of Crabtree Polestar RCD type

    One of my customers has a TPN board fitted with some Crabtree Polestar MCBs with attached RCDs, and I was wanting to confirm the type of RCD (i.e. AC, A). The RCD modules have either no marking to indicate type, or are marked with the logo for Type AC or Type A. See attached photos. I'm...
  3. newfutile

    Test the (RCD) Residual Current Device or die

    Just seen this label on a consumer unit im testing. As far am im aware no one ever pressed the test button.
  4. KeenPensioner

    UK RCD tripping explanation

    As a keen adult learner any help would be appreciated I understand that an RCD trips when there is an imbalance detected between L and N. If a 30mA RCD is monitoring several circuits (in a split board for example) and one of the circuits is protected by a 32A Type B MCB. I'm trying to...
  5. R

    RCD tripping

    I recently purchased waterproof garden strip light from Amazon but yesterday I turned on garden light at night time after a long spell of heavy rain during day time and I heard a buzzing sound coming from it. After a while my RCD tripped but the same light when I turned on dry day nothing...
  6. timhoward

    32 amp 3 phase socket, 300ma RCD

    I'm interested how you would all approach this one. A 3 phase distribution board on a caravan site, under lock and key. Only warden and manager have access. One of the final circuits is protected by a 32A 3ph MCB and it supplies a 32 amp TPN socket adjacent to the board, the socket having it's...
  7. L

    ELCB or RCD for instant tankless shower water heaters?

    Some electric tankless shower water heaters have inbuilt ELCB. Are they better than Triton water heaters which don't have it ? and does Triton tankless water heaters have any inbuilt security? Or an external RCD is better ?
  8. S

    Communal DB does it require RCD protection to be a sat EICR

    Question is does this DB really need RCD protection as there are only internal lights and sockets supplying this large building that used to be a mansion and is now 4 flats. heres the DB its labelled L/L on the right only providing 3 light pendants a timer light and 2 single sockets all in the...
  9. littlespark

    Little problem here. RCD…

    Doing a kitchen job for my daughter’s music teacher, who also happens to have been in my wife’s class at school. Nothing big… just a little alteration to sockets, and run in a new cable for a built in oven. Original cooker point being used for hob. I hadn’t looked inside the board… just noted...
  10. J

    Is it possible to put a 16mm swa on a 40a mcb protected by an rcd

    Is it possible to put a 16mm swa on a 40a mcb protected by an rcd
  11. Electreacle

    RCD protection upstream?…

    Evening everyone… I’ve attached pictures for your leisure.. so basically the customer does not have any RCD protection.. 3036 fuseboard is in situ.. they want an outside socket.. I’ve told them that I can’t install one as there’s no RCD.. they’re asking if there’s any alternative ways safely...
  12. gazdkw82

    RCD testing issues

    Hi all, Been a while since I have been on here. I have been on an apprenticeship the last 3 years training in the BMS world. Taking that into account, I have not done any testing for the last 3 years so please be gentle with the below.i feel very rusty. My neighbour has asked for my help with...
  13. M

    Contactum RCD and RCCB update

    Hi all. Looking to refresh the MCB and RCCB (100A 30mA) units to my 20 year old Contactum P12/100N CU installed in my house. I have presently a section of Contactum 9000 Type B Range. These are clearly discontinued now. Can I assume that the new CPB Type B model of MCB and RCCB range is now...
  14. Brownie91

    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...
  15. 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...
  16. 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...
  17. C

    NAPIT Certification Scheme failed 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...
  18. 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...
  19. 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 ?
  20. 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...

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