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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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    John Peckham:

    The tenants bus bar is part of the un-metered BNO network. The supplies to the Ryfield boards are taken from tap off boxes on the BNO bus bar. Each flat supply comes from a fuse in the Ryfield to a Series 8 head fitted with a " Red Head" solid link for meter isolation to the meter and then a switch fuse. The meters are in the riser cupboard on each floor that the flats are on. SWA cable from switch fuse to the consumer unit in the flats.

     




    Thanks John. How is the busbar served, via LV Switchboard & MCCB? id have thought it would need to be metered, otherwise whats to stop someone putting a tap off onto the busbar and taking themselves an unmetered supply or taking a supply from the switchboard? 

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  • 0

    John Peckham:

    The tenants bus bar is part of the un-metered BNO network. The supplies to the Ryfield boards are taken from tap off boxes on the BNO bus bar. Each flat supply comes from a fuse in the Ryfield to a Series 8 head fitted with a " Red Head" solid link for meter isolation to the meter and then a switch fuse. The meters are in the riser cupboard on each floor that the flats are on. SWA cable from switch fuse to the consumer unit in the flats.

     




    Thanks John. How is the busbar served, via LV Switchboard & MCCB? id have thought it would need to be metered, otherwise whats to stop someone putting a tap off onto the busbar and taking themselves an unmetered supply or taking a supply from the switchboard? 

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