This is a 3 -Phase 100 Amp per phase Prepaid Meter. It needs to be installed next to a DB Board, but is supplied with a PLC (Power Line Communication) keypad which can be plugged into a standard wall socket on the same electrical circuit of the meter. It uses the standard power lines in the wall to find and communicate with the meter remotely. The keypad uses a standard 9V battery to power it. The cable that plugs into the wall is the communication cable and not the power cable. This meter is suitable in small commercial complexes and shopping centres that have a maximum circuit breaker of 100 amps.