rcd

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  1. CopiamElectrical

    30mA Type A RCD Protection for EV Charger? Y/N? (TESLA Gen3)

    Afternoon everyone, I have a quick question about the Tesla Gen 3 Wall Charger? Does it require Type A 30MA RCD protection or not. Only because the Wall Connector features built-in RCD Type A + DC 6mA. I know we should be installing Type A 30mA protection however we also work with what the...
  2. S

    Air Source pump tripping RCD

    Keeping this brief.....................New dwelling.....TT system with 100mA S type rcd protected supply to local board with 30mA RCD. Freelance "engineer" to commission Heat-Pump, as original company disappeared before installation. ASHP worked for a while then tripped the 100mA RCD not the...
  3. D

    How to test RCD for lighting circuit

    I live in Australia; you can use a socket tester to test the RCD for the power outlet circuit. Plug device to a 3-pin wall socket, set testing mA to 30 on the device and press test button. What is the best way to test RCD on the lighting circuit – from an existing B22 or E27 lamp holder? (Not...
  4. J

    Wiring an MCB beetwen RCD and Main switch

    Good evening, I wondered how the MCB between RCD and the Main switch is wired while watching this video. Photo attached. I assume a busbar link is connected to the main switch and mcb. Do the line conductors and the busbar connected at the same terminal and then go to the RCDSs? Link to the...
  5. Rooster

    Is an RCD required with RCBO's protecting the circuits

    Surely if you fit an RCBO on each circuit, an RCD is not required? Of course, a DP Main switch would be to cut all power, but like I ask, is the RCD required as it is incorporated in the RCBO? Thanks
  6. happysteve

    3 phase cooker - idiot check

    I'd appreciate a quick sanity check, thanks in advance: New circuit for a 3 phase cooker, in a community centre (run by a charity). Total load 16.5kW: L1 27A, L2 27A, L3 15A. (6kW oven, 6 hotplates: 3x 2kW, 3x 1.5kW). Commercial setting so no diversity: 3x 32A OCPD. (?) TN-C-S, so Zs...
  7. ValgarGrimal

    BG SPD after RCD acceptable?

    Hello, I was looking at installing a SPD into an existing split load RCD BG consumer unit. In the instructions for the SPD it states that it may be positioned before or after a RCD but I have always been of the idea that the SPD needs to go before the RCD due to the RCD potentially tripping...
  8. M

    The EC Fan keeps tripping the RCD

    Hi All, Weird matter happening here and I hope you can help! My 3 Pahse EC Fan is connected to a sensor and a controller for the temperature setpoint. A control panel to manage the EC Fan is in the room. EC Fan above faux ceiling. The panel has it's own MCB. The RCD is upstream, before the...
  9. jjjinx

    Anyone know this RCD symbol?

    Hi guys, I know the AC symbol but the one to the right i've not seen before or just not noticed it. Anyone know?
  10. S

    Could the RCD be faulty?

    Hi, I can't get an RCD to switch on at all, even with the main isolator switched off. Is that definitely a faulty RCD or could it be something else? I have a metal 8-way Cudis CPN consumer unit with two RCDs, one with four MCBs and the other with one MCB. I originally switched the right-hand...
  11. R

    Can anyone explain what a time delay RCD is needed for?

    I've scoured the internet for what these do and am coming up short on finding information. What are these for? (ie what specific problem are they trying to solve) and why do they need to be time delayed? Thanks in advance
  12. F

    Replacement DB to Submain RCD advice

    Morning guys, I would like some advice, currently at my workplace, I am replacing a DB and existing wiring in a warehouse. One of the ways feeds a sub-db to a small office. The sub-db is an old wylex rewireable db with 3 of the 4 ways used (Sockets,sockets,lights). My company does not want to...
  13. N

    C2 Vs C3 for no RCD on various circuits

    So I'm getting various responses to this depending on how things are interpreted. Here's a scenario: Assume property is a tenanted property. Assume cables are run buried in walls/under plaster (depth unknown). Which of these circuits merit a C2 if they are not RCD protected. 1. Lights 2...
  14. M

    UK RCD trip without appliance powering on

    I’m going to call an electrician out on Monday, but curious if anyone has any ideas about this fault: I have a new kitchen fitted and two existing ovens connected to existing Cooker circuit. Both ovens have been working fine. new 7.4kw hob has been just been fitted to replace a small 13a one...
  15. A

    can a consumer unit switch be replaced by an RCD?

    HI My flat just failed the EICR because there is no RCD in the consumer unit. There is no space for a new RCD as the consumer unit is full. Do I have to have a new larger consumer unit installed? Or can I have the existing on/off switch replaced by an RCD? Thanks Alan
  16. archee

    UK RCD tripping when using loft socket.

    Afternoon all, I have an issue with the loft socket. When we moved the previous owners had a 2.5mm cable going up from the CU Via FCU however, the wiring was old and did not have earths(they cut them off). So I decided to completely rip out the old wiring including unnecessary spur and put...
  17. M

    RCD Tripping times question

    A few 30mA RCBO's that i have tested recently are tripping lower at x1 than they are at x5, e.g 13.1 x1 13.8 x5, I know both these results comply but im curious does any one know why the 1 times trip is lower than 5?
  18. Rarbur

    Lighting circuit trips RCD but not MCB, can’t find E-N fault

    Long shot but thought I’d try, have a lighting circuit that trips the RCD as soon as the neutral touches the neutral bar for said RCD. Bypass that and it works fine just on an MCB so would think earth-neutral fault, but doing an IR test between N and E shows as a pass (>99M ohm). So unsure of...
    • Rarbur
    • Thread
    • ausie elec circuit fault lighting lighting circuit mcb rcd trips
    • Replies: 6
    • Forum: Australia
  19. R

    Do SPDs need RCD protection ?

    Hi there , Currently doing a college project where i need to select protective devices for the contract. I'm now at the point of selecting SPDs and had a couple questions. I have chosen MCG RCBOs for my circuit breakers in this project for all my boards apart from the board supplying...
  20. GriffMG

    Pond Pump tripping new consumer unit RCD

    I have a fairly recently installed consumer unit with an RCD, between it and the garden there is another, much older (25yrs?) RCB (big Wylex thing) from which a couple of power points are provided on the wall of my fish ponds. Before the consumer unit was fitted I could run the pond pump from...

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