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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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  • 0
    And if you can’t keep the load to under 400 Amps, then give SPEN your cables to terminate on their dedicated fuse way (fused at 630 Amps), terminate the other end in the first Lucy MSDB, they ‘daisy chain’ the other two from there.


    Lucy MSDB:

    https://www.lucyelectric.com/product/msdb-vertical-busbar/


    Not sure how SPEN meter this, some DNOs now have the CTs in the dedicated fuse way within the DNO sub, but some will need a CT chamber.


    Although if all the services within your building have full settlement metering, then no metering is required on the incoming bulk supply.


    This forms a BNO network, who ever manages the building needs to take that on and its responsibilities.


    if an IDNO adopts the sub, usually they will adopt the BNO network too, making things simpler.


    Simon
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  • 0
    And if you can’t keep the load to under 400 Amps, then give SPEN your cables to terminate on their dedicated fuse way (fused at 630 Amps), terminate the other end in the first Lucy MSDB, they ‘daisy chain’ the other two from there.


    Lucy MSDB:

    https://www.lucyelectric.com/product/msdb-vertical-busbar/


    Not sure how SPEN meter this, some DNOs now have the CTs in the dedicated fuse way within the DNO sub, but some will need a CT chamber.


    Although if all the services within your building have full settlement metering, then no metering is required on the incoming bulk supply.


    This forms a BNO network, who ever manages the building needs to take that on and its responsibilities.


    if an IDNO adopts the sub, usually they will adopt the BNO network too, making things simpler.


    Simon
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