Whether you require a kWh 1-phase or 3-phase depends on the size of your connection and the number of phases used. The difference between a kWh 1-phase and kWh 3-phase is the number of cables entering the home and the indicated connections on your meter cabinet. kWh 1-phase Most homes are connected to the electricity grid with a 1-phase connection. This enters the house in a cable consisting of a phase wire and a neutral wire. The difference between the phase wire and neutral wire is the voltage on your outlets. If you have a 1-phase group cupboard, the electricity meter will read 220/230V. kWh 3-phase With a kWh 3-phase connection, 4 cables enter. This connection is common in large homes or businesses. It is then possible to allow a higher energy consumption. A kWh 3-phase connection can be easily recognized because 3x220/230V or 380/400V is indicated on the electricity meter. More information on which phase kWh meter you need