Amprobe ACDC-100 1000A AC/DC Clamp Meter Digital clamp meter measures alternating current (AC) to 800 amp, direct current (DC) to 1,000 amp, DC voltage and AC voltage to 600 volts (V), capacitance to 3,000 microfarads, and resistance to 40 megaohms Average-sensing meter provides accurate readings when measuring linear loads, where the current or voltage has a sinusoidal waveform Hall-effect current clamp with 2" (50 mm) jaw opening measures current without touching or interrupting the circuit Inrush reading displays measurement of entire motor inrush period at startup Meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for category III installations up to 600V