Browse Forums Building A New House Building Standards; Getting It Right! 1. optional, you can but normally just use the earth from the main switch board 2. should be enough but the distance determines voltage drop - sparky should work it… 1 32159 Has anyone had any experience with underfloor heating in Brisbane or a similar sub-tropical area? Specifically with in-slab hydronic on polished concrete floors, but any… 0 1991 1 4337 |