Help with Main Supply Cable Size and Type
We have a small bake house to the rear of our barn, that we decided to use as a training school and hopefully make our mistakes on a small scale before taking on the main barn conversion. We wish to run our main electric cable underground from the pole with our temporary 6kw supply to the barn's planned utility room (a run of 40 metres) and then underground to the bake house (another 50 meters). I think I know about the requirements for trench depth - 500mm deep, with sand bed, red ducting, more sand and webbing, then back fill. However, I would appreciate some help with cable size and type (our supply will be single phase). We plan to use a wet underfloor heating system for our heating in the main barn and the same system combined with immersion heater for the hot water in three bath/shower rooms, plus the normal domestic requirements of a large three bed property. The bake house has converted into a small one bedroom house on three floors (immersion heater for hot water, wood burner plus electric oil filled radiators for heating and the usual domestic demands.