Only calibrated meters are approved for electricity accounting according to §25 of the German calibration law. Non-compliance is an administrative offense according to §19. RS485-Bus radio three-phase meter. Maximum current 3x80A, standby loss only 0.8 watts at L1 and 0.5 watts at L2 and L3 each. Accuracy class B (1%). With RS485 interface. The direct measuring three-phase meter measures the active energy based on the currents flowing between the inputs and outputs. The own consumption of only 0.8 Watt or 0.5W active power per path is not measured and not displayed. 1, 2 or 3 external conductors with currents up to 80A can be connected. The starting current is 4OmA. Connections L1 and N must be present. Connection via a FBA14 to the Eltako RS485 bus with a 2-wire shielded bus cable (e.g. telephone line). The counter reading and the instantaneous power are transferred to the bus - e.g. for transmission to an external computer or the GFVS 3.0 software - and also via the FAM14 to the radi