I have a greenhouse and received a quote from the Scottish hydro for a new electric connection. Here is the details: Connections: 1 Com/Ind three phase 50kVa connection for a greenhouse, no abnormal loads. The connection will be three-phase, 400/230 Volts, and alternating current at 50 Hz, with a maximum capacity of 50kVA. Where your connection involves multiple phases you will need to balance the electrical load evenly across the phases to avoid overloading. My question is: I am planning to build a shed and keep the main meter there so that I can accept this offer and get connected quickly. Greenhouse is about 140 meters away. Just now I don't need a 3 phase electric in the greenhouse. I am planning to have lots of grow lights. Can I sub-main a single phase from the main meter to the greenhouse? I am guessing I would use max. 20kva in the greenhouse. Also what does 1 Com/Ind three phase mean?