Measurable conductor diameter: 40mm. Primary current rating: AC 10A. Output voltage: AC 100mV/A. Amplitude accuracy (45 to 66 Hz): +/-1.0 percentrdg.+/-0.05 percent f.s. Phase accuracy (50/60Hz): within +/-3 degree . Residual current: 5mA (100A on forward and return). Frequency characteristic (accuracy deviation): within +/-3 percent at 40Hz to 5kHz. Maximum rated voltage to earth: 300Vrms (insulated conductor). Maximum allowable input: 30A continuous. Measures: 74mm width by 145mm height by 42mm depth.