rccb

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  1. 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...
  2. 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
  3. D

    RCCB Breaker Tripping?

    Woke up this morning and tried to turn on the computer (work from home) wouldn't power on, checked lights they worked fine. Went downstairs to check the switchboard and only the RCCB breaker was tripped, all other MCBs on. I can narrow this down to it occurring between 06:30 - 07:30 this morning...
  4. AlainSanchez

    Which RCCB should I use?

    I live in Cuba. In my house I have two 120V lines an a neutral. I also have a ground instalation not binded to the neutral. Some parts of the house are wired with L1 and others with L2. There are some outlets that uses both lines as some equipment (AC for example) needs 220V. Given that...
  5. sythai

    Replacement for star breaker RCCB which has failed.

    Hi Guys After a replacement for this star breaker RCCB which has failed. Needs to be 'A' type and is 3 module. What are my chances / slim I reckon ! Cheers Sy
  6. MrGwythers

    Ev charger rccb fault

    Hello can anyone shed some light on this fault, we have a supply into 63A 100ma rccbs that feed matte for ev chargers. The rccbs keep losing a phase the first one lost L1 on rccb outgoing side, we've replaced that one now another 3 out of 5 rccb have lost L2 on all 3 faulty rccbs the first rccb...
  7. J

    Rccb protection of lighting circuits

    My 1990 property does not have the lighting circuits protected by the Distribution Board RCCB.Only the power circuits are protected.If I get a trip from the RCCB the lights stay on. Do I need to upgrade my system to include RCCB for lighting?
  8. D

    RCCB Tripping, after some reno work

    Hi guys. Looking for some advice. I’ve had some building work done. 1. Outhouse. The wiring internally was changed but the wiring from the house to the outhouse is the same. All electrics working okay in there. 2. Conservatory built. Wiring is in however it is not connected up yet so no...
  9. S

    Why is split RCD not appropriate for TT?

    OSG Pg.40 says: '[Split CU with 2x RCCBs] is not suitable for an installation forming part of a TT system as there is insufficient fault protection of the single-insulated conductors that connect the load side of the double-pole main switch to the supply-side of the RCCB's.' Why is there...
  10. J

    UK 100mA RCCB keeps tripping with certain items connected.

    Hi all I am in an industrial unit and the 100mA RCCB keeps tripping. They use it as the main switch inside of the unit's distribution board. The mainboard that feeds all the units has an MCB in it. The RCCB keeps tripping when I plug-in AC to DC transformer loads such as laptops, speakers...
    • Jackster
    • Thread
    • 100ma certain connected industrial items keeps rccb tripping
    • Replies: 41
    • Forum: UK Electrical Forum
  11. A

    Can a BS 61008-1 RCCB be used for fault current protection

    I am aware that a BS 61008 can't be used for overload protection but is there a reason that it can't be used for fault current protection.
  12. M

    Light circuit off at consumer board - but RCD / RCCB still tripped

    Hi I'm removing an extractor fan from our WC, as it's just a toilet and sink and we never use hot water in there anyway... The extractor is on the light circuit, but has it's own pull cord. I double checked by turning the fan and light on, then switching off the MCB. All good. I triple checked...
    • Max Rasa
    • Thread
    • board circuit consumer consumer board light off rccb rcd still tripped
    • Replies: 12
    • Forum: UK Electrical Forum
  13. B

    RCCB tripping randomly

    At my home there's a RCCB that keeps randomly tripping, ranging from once every month, to two times in a week. We couldn't identify any pattern. The only thing that seems to be related, is that it seems to happen more frequently after setting up the microwave clock, but it's not an immediate...
  14. W

    RCCB tripped when neutral - earth touching

    When replacing a light housing, I found the RCCB was somehow tripped. I first used a pen tester to check the wires and found them normal (no voltage). I then used a multimeter to test again. Here are the results: L-N 7.4 v L-E 6.8 v N-E 3 V After the RCCB was tripped, the readings were zero...
  15. R

    RCCB tripping but no MCBs have tripped.

    I’ve a Square D Split load RCCB board that has a strange issue. The RCCB trips and none of the MCBs seem to trip. The only thing that has recently been done is replacing the sockets and switches. I’ve tested each socket with a socket tester and it was showing as correct on all sockets. I only...
  16. I

    48.3ms x 1 rccb

    Would this be a c2, I checked codebreakers im not to sure. Thank you.
  17. gazdkw82

    Suitable RCCB replacent

    I need to replace this old RCCB with a suitable replacement. https://circuitbreakerspecialists.co.uk/product_info.php?products_id=163 Currently the one installed is not tripping on test and from the test point. Changing the entire consumer unit is not financially viable for the home owner at...
  18. Z

    UK Rccb tripping

    Hello, I have a machine that is only a 3ph motor 4kw with a delta inverter . When i turn off the machine from the plug the rccb (pfim 63/4/003) trips . What is the problem and what can i do about it. Thank you
  19. naylorpd

    3 phase RCCB tripped, won't reset

    Hi, in my garage I have a 3 phase RCCB that has tripped and I just can't get it to reset, even with all the downstream MCBs switched off. Bit of a nuisance really as mother in law has no power to her flat above the garage and the garage door and front gate don't work. I tried uploading photo...
  20. Y

    How do you choose the Rccb Rated Current

    Hi everyone, How do you choose Rccb Rated Current at the your country? Do you have an official document about it? What do you reference for nominal current coordination with mcb before it? How to calculate the rcd rated current and mcb rated current coordination, is there a document about...

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