A 4 storey office block with it's own transformer on a TNCS system requires 20 EVC points located in a rear goods yard. Each are 11kw 3 phase so 16A TP apiece via 16A Type A RCBOs. Each EVC will be independanly spiked using either a traditional earth spike or a Condudisc to make them TT. All SWAs will terminate at an adaptable box in LV Switchroom mounted below D/Board thus keeping all EVC earths seperate to that of the TNCS. The plan is to install a metal construction solar panel canopy over the 20 parking bays. Presumably this will need earthing but to which system? The legs of the canopy are metal and may fall within 2m of a number of EVCs. I'm guessing bond them to the local TT Charging point? The other issue is the solar on the canopy roof which is importing back into the buildings LV TNCS System currently serving the building and the question is - will this need earth seperation and to what system. Any feedback is greatly appreciated.
Never mind, by all accounts the 18th guide book on Monday will reveal all. Meanwhile, in the real world around 4000 units are being sold each month, connections being dealt with by the DNOs, as they have been for years. This is the problem with the guide book, its always years behind. Typical example is Marinas, swimming pools and bathrooms. You would think they hadn't existed before the 16th ed. And to flog the book the called them "special locations"
Never mind, by all accounts the 18th guide book on Monday will reveal all. Meanwhile, in the real world around 4000 units are being sold each month, connections being dealt with by the DNOs, as they have been for years. This is the problem with the guide book, its always years behind. Typical example is Marinas, swimming pools and bathrooms. You would think they hadn't existed before the 16th ed. And to flog the book the called them "special locations"
