200amp isolator at cutout position.

[Engineer54]

I think a lot of this is probably down to semantics.
An installation would require an isolator, and an EIC, whereas a system would not.
As for the DNO making final connection, we don't know what has been agreed.
Obviously at some stage during the work, the system will require de-energisation.
It may be that the DNO will pull fuses, either in the intake room, or perhaps even at the sub station.
It will all depend upon what deal has been brokered with the DNO.

However at the end of the day, unless the individual meters are placed between the DNO head and the Ryfield board, this is a 'system to distribute electricity to the public', and as such the requirements of BS7671 do not apply.

If that's the case, it's as Bif stated then, No EICR is required for this work. Can't have a report based on BS7671 being applied to an installation outside of it's scope...

 

[sedgy34]

I am currently working on a contract replacing lateral main cables to a block of flats including installing a new 3 phase Ryefield with BS88 63A fuses. Is there any requirement to provide a 200amp 3 phase isolation switch between the DLO 200amp service head and my Ryefield board. If so what reg/regs from bs7671 confirm this.

As your replacing mains cables I can't see DNO being involved you should fit kmf units before the ryfield board on the outgoing side to each flat, on new builds you would have to fit your own earth cables as metering have also passed the buck on it.