3 phase

[davesparks]

Thanks for the info but it has gone off my question so can I put the house across the 3 phases or does it have to be on the same phase I have 2 x rings upstairs, 2 x upstairs lighting, 1 x smoke circuit, 2 x AC supplies, 3 x down lighting, 2 x downstairs ring all on Rcbo's

The whole installation should be balanced across all three phases as far as practical.