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Installation (domestic) without Service Head

Martyn
Canvassing opinion...


We have an Installation without its own service head fed from a 50s/60s ryefied/MSDB style unit.


The Ryefield/MSDB is inturn fed from a 200A Tp&n supply head belonging to DNO. No visible issues other than supply to MSDB being unsheathed.


The MSDB has no key or tool to open, has direct access to 70mm lugged cables with door closed. 


With door open for fuse access there are no barriers, all removed and lost. 


Service cables are single insulated, tails to meters insulated & sheathed direct in to this unit. 


EICR for one of the supplied flats, does it pass or fail?
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  • 0
    I'd say don't bother, pre meter is Building networks,  and adding an unexpected red head to the BN is not really help to make it any safer- it could just as easily have been sealed Henley blocks combining the meter tails, and you'd not open those. Mind you in that case the metering company pulls the DNO fuses to the whole block off to change a meter - I know as  I have a flat in just such a building (DNO  fuses, horrible mess of 35mm tails and sealed blocks to meters, and then after each meter a 63A switch fuse and a T and E lines out to each flat.) Demarcation is then the meter

    You could add a switch fuse maybe, but it will probably be the same fuse value as the box of danger and it too has the drawback of making the dangerous part no safer further if pre meter needs abstraction proofing, and you probably strictly need BNO permission to do it (if they even know).

    Mike

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  • 0
    I'd say don't bother, pre meter is Building networks,  and adding an unexpected red head to the BN is not really help to make it any safer- it could just as easily have been sealed Henley blocks combining the meter tails, and you'd not open those. Mind you in that case the metering company pulls the DNO fuses to the whole block off to change a meter - I know as  I have a flat in just such a building (DNO  fuses, horrible mess of 35mm tails and sealed blocks to meters, and then after each meter a 63A switch fuse and a T and E lines out to each flat.) Demarcation is then the meter

    You could add a switch fuse maybe, but it will probably be the same fuse value as the box of danger and it too has the drawback of making the dangerous part no safer further if pre meter needs abstraction proofing, and you probably strictly need BNO permission to do it (if they even know).

    Mike

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