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how to put rcd and rcbo in Paul consumer unit

Former Community Member
Former Community Member
so I need to put an RCBO into a British General 16-Module 10-Way Populated High Integrity Dual RCD Consumer Unit (2920G) it has three neutral bars so that fine the issue is how to connect the buzz bar that will supply the RCBO and the cable that takes power to the RCD feed in and connect them at the outlet of the main switch I've done a mock up on a board I have at home and have used an MCB instead of an RCBO as I haven't Brought it yet but would this be ok if not how do I get round it???229ed91cdcfac6e23be1814cc2729618-huge-screenshot-2020-11-26-at-20.05.18.png
0e5f3d62910156680fe54af304ddba78-huge-img_1544.jpg
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    If you can cover the live exposed bus , that would be greatly appreciated by the next person to open it... I'm a bit surprised there is no plastic cover supplied with it, most makers these days supply the bar ready dipped.


    More generally, not just this case, the important thing is that the RCBO gets its supply L and N from  after the main switch and before the RCDs (i.e. same place the RCD gets L and N), and that the connections are not mechanically stressed - how you achieve that will depend a bit on available terminals and capacity. If  you ever find you have to use wire links, then if need be DIN mounted terminals exist that can be added to provide  secure anchor point. If the RCBO is 32A, then its L and N tails that supply it could be as small as 4mm, making it easier routing.
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    If you can cover the live exposed bus , that would be greatly appreciated by the next person to open it... I'm a bit surprised there is no plastic cover supplied with it, most makers these days supply the bar ready dipped.


    More generally, not just this case, the important thing is that the RCBO gets its supply L and N from  after the main switch and before the RCDs (i.e. same place the RCD gets L and N), and that the connections are not mechanically stressed - how you achieve that will depend a bit on available terminals and capacity. If  you ever find you have to use wire links, then if need be DIN mounted terminals exist that can be added to provide  secure anchor point. If the RCBO is 32A, then its L and N tails that supply it could be as small as 4mm, making it easier routing.
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