Yes, you can use a jumper to power the meter as long as the voltage input is within the meter's control power limit of 100-415Vac for P1 meters and 20-60Vdc for P2 meters. V1 on the voltage input can be jumped to "L" on the meter's power supply terminal and V2 of the voltage input can be jumped to "N." NOTE: If there is a neutral in the system