rcbos

rcbos

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  1. A

    Diversity on a 20 Way or longer CU with many (low utilisation) ring mains

    Hello, A quick question which I suspect is becoming more commonly asked as we go towards having more ways in our CUs. Domestic dwelling, nothing too exuberent but during rejigging the large downstairs ring was split into three and some radials added, as well as seperate feeds to allow for a...
  2. G

    Off-grid Giandel inverter with 2 AC outputs wired into 2 separate RCBOs - weird or normal RCD behaviour?

    Hi All, Looking for some advice into my build. What I've basically done is add additional RCD protection to my 100% off-grid 12V 3300W Inverter system by adding RCBO breakers to both AC outputs of the inverter (12V Giandel 3300W 240V). Things you should know for context: Inverter has no N-G...
  3. D

    RCBO installtion in old MCU following EICR Report

    Hi, I recently had an EICR done at my property which unfortunately was unsatisfactory. So the electrican advised a new fuseboard from BG General or Fusebox but he advised there will be alteration to the wall as the unit is flush mount inside wall and the mounting frame is glued in with screws...
  4. I

    Electrak - no RCBOs

    We have a customer in a large office block with all power in the building fed from an Electrak plug in busbar system. Lots of desks, lots of computers. Noticed none of the track is on an RCD/RCBO but they’re wanting some of the floor boxes relocated. Would this fall under the remit of needing...
  5. R

    HELP me figure out RCBOs in Split-Phase

    Hello, I have a hypothetical question (I'm an electrical engineer) to better understand RCBOs and how they are used in the USA. Let's say I would like to install RCBOs (or maybe just RCCBs) in my home to protect against residual currents. I am in the USA so my home has split-phase (two phases...
  6. N

    Selectivity RCBO Board

    Hi All I'm new here. I have just finished my NVQ and waiting to do my AM2. I have a question on selectivity as it has always slightly confused me, as I've never seen it practically since I started. My question is will selectivity be achieved if all boards were RCBO's and not RCD's as If there...
  7. L

    RCBOs for old Newlec board?

    Is it possible to replace NLVB32 and NLVB10 MCBs with RCBOs, or is a whole new board required? Board is labelled NLCU5PSW and is 20-25 years old.
  8. D

    Square D QL 2 board with the lighting circuits from two MCBs replace them with single pole RCBOs?

    Would this be Compliant, safe, on a TT earthing system with an upfront S-type RCD
  9. I

    Schneider Vigi RCBOs

    Anyone used these? Come with a really short fly lead on, impossible to reach the neutral bar. Shouldn’t be required to extend, should come with more length like a standard iKQ RCBO does for example!
  10. weevilward

    Two RCBOs tripping together, no cross-connection. Need help…

    I was recently called to a domestic nuisance tripping job, dual-RCD Wylex board with one of the RCCBs tripping intermittently, mostly during the night. TNC-S, rewired couple of years ago (not by me). Three circuits on this RCCB: Cooker, Downstairs sockets, Downstairs lights (I know - dumb...
  11. Designmen90

    Wiring RCBOs inside panel

    Hello everyone, I would be happy to hear your opinion about wiring RCBO inside switchboboards, panels. Here I attached some example. We have 9 (F1-F9) RCBOs, each 20A. If we connect first one (F1) with 16mm2 wire to first phase busbar, second (F2) with 16mm2 to second phase busbar and third (F3)...
  12. A

    T T consumer unit upgrade

    Hi I am installing my first tt system consumer unit I understand that I need a 100 amp time delayed rcd main switch but can I use rcbos in line next to them or Mcbs and does any one know of a lockable board as I need to install it vertically thx
  13. B

    RCBOs for vynckier CCU

    Hi Guys, Just after a bit of advise, need to add RCBOs to Sockets/shower circuits to a vynckier CCU. does any one know a make that would fit, I know it would have to be a compact on due to the hight, thanks all 👍
  14. N

    Upgrading an existing consumer unit with RCBOs

    hi there I have a plastic consumer unit that was installed about 8 years ago - inside is the standard array with RCD. Im planning to switch to RCBOs (and cost wise I actually bought a fully populated consumer unit as it works out a lot cheaper ) my question is to comply and get through a...
  15. J

    AFDD in 18th 2nd Amendment

    18th 2nd amendment comes in, in Sept. AFDDs are in it. To be fitted on socket circuits of 32A and above. To be fitted in residential blocks of 6 floors and above, care homes and the likes. Are these mandatory for everyone? If say you have a 17th edition CU, do you have to update to AFDD...
  16. J

    RCBOs for Schneider CU

    The CU box is called a 'compact' and although a decent size, when an RCBO is istalled, it will fit but there is not much room at the top and those RCBOs are taller at the top. Does anyone know of another make rather than Schneider, that fit, that maker shorter RCBOs?
  17. W

    double pole or single pole rcbos

    What is everyone's thoughts on double pole rcbo's vs single pole, I mostly use Fuse Box these days with the odd Hager board if i'm feeling flush. I usually use the single pole fuse size rcbos. recently I tried the mini double pole rcbos but for the extra cost I think I will go back to using...
  18. telectrix

    Q0E RCBOs

    having a bit of a clearout. I have 2 x QOE B20 RCBOs up for sale .Both trip tested. Also a load of Wylex plug-in MCBs both 60898 (toggle switch) and 3871? push button. most with bases. selection of 60898 breakers of various makes and ratings. some brand new BG 32A MCBs, surplus to needs when...
  19. Dave OCD

    Fusebox CU With Compact DP RCBOs

    We just finished a complete rewire of a very old 3 storey house yesterday, quite challenging and actually exhausting at times and it took 16 days altogether, but I'm really happy with the finished job. This CU was started at 4.20pm yesterday and completed at 6.55pm including the RCBO tests. [The...
  20. B

    TN-C-S (PEN) RCBOs Discussion

    I'm currently planning for a CU upgrade on the domestic premises, and following previous advice on this forum, I was told that I should consider upgrading to a Type A RCBO CU. I have been doing a bit of reading and came across some confusing information, stating that an RCD would not work on a...

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