Gents, Have a job coming up soon which involves a new 100kva supply being fitted by the DNO with CT metering to smallish industrial unit which is yet to be rented out. In the blurb that comes with quote it states that the customers eletrician must have suitable tails ready on the day for connection directly in to their CT chamber. Not having done this before whats the best way of tackling this? Min tails size speced is 70mm and being as I don't know yet how may Distribution boards will be required and where I want to leave future expansion open and easy. Would 70mm tails feeding a 200A TPN Main switch be OK which then leads to a Busbar chamber be the way to go, or would a 200A switch feeding a Panel board be better as I've been looking at these on the web, and wondered if they were what you Industrial sparks use? Any advice gratefuly received!