What electrical and water supplies do I need? The generator will need a dedicated electric supply suitable for the power rating of the generator – for example if the generator is 6kW, you will need a 26amp supply. In order to comply with current regulations, all electrical work should be specified and carried out by a qualified electrician. The generator will need a 15mm cold water supply, with a minimum pressure of ½ bar. - - - - - - - - - - - - - - - - |