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Connecting Multiple Bemco/Ryefield Boards

GHEC
Ok I have a new build project where one Bemco/Ryefield board is not large enough to cover all apartments. 


I will need to install 3 to cover the number of outgoing ways required.


My questions is this. Given that there is one incoming bulk supply, what options are there to split it between the three? I know Lucy do an MSDB with a vertical busbar. Would the DNO accept daisy chaining these together? Or should we use a busbar chamber and tap-off to each board?


Any advice would be gratefully received.
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    The schematics for 3 phase (or indeed split phase) prepayment metering that I have seen are a bit like This thing    

    basically the card reader part's gated output operates a singe phase contactor coil with a contact per phase to cut the power to the loads, and the 3 phase metering, which may be whole current or based on CTs creates a pulse count type output that feeds into the card reader part. (pulses being the standard LED flash of nominal 80msec long, and 1600 per kwh, or  a pulse every 2250 watt seconds)

    The whole thing is then boxed up as an  anti tamper  sealed assembly.

    An example of the kit of parts is   here  I have not seen it in the wild, but we were once asked to look at the feasibility of a system like this for someone, it is not cheap, but it can be done.
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  • 0
    The schematics for 3 phase (or indeed split phase) prepayment metering that I have seen are a bit like This thing    

    basically the card reader part's gated output operates a singe phase contactor coil with a contact per phase to cut the power to the loads, and the 3 phase metering, which may be whole current or based on CTs creates a pulse count type output that feeds into the card reader part. (pulses being the standard LED flash of nominal 80msec long, and 1600 per kwh, or  a pulse every 2250 watt seconds)

    The whole thing is then boxed up as an  anti tamper  sealed assembly.

    An example of the kit of parts is   here  I have not seen it in the wild, but we were once asked to look at the feasibility of a system like this for someone, it is not cheap, but it can be done.
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