Hi,
I am designing electrical distribution for a building with 10 flats and 2 commercial units. The main UKPN supply is connected to a Ryfield Fuse board. Each flat and commercial unit is fused from the board and then metered. from the same fuse board, landlord meter is also connected and it leads to landlord equipment and supplies. I was wondering from where should I feed the two different pump sets (commercial sprinkler system and residential sprinkler system). There is also an evacuation lift. Note that commercial sprinkler pump and evac lift are secondary power supplied via UPS system. Residential sprinkler does not have secondary power supply to it.