The Fluke i1010 AC/DC current clamp is designed to extend the current ranges of Fluke tools and can take current readings without breaking the circuit. Battery-powered dual Hall-effect, clamp-on probe measures dc current from 1-1000A; AC current from 1-600A AC rms. Measures AC and DC current down to 1 amp with specified accuracy and is useable to 0.5A. Output is 1 mV per amp DC or AC. Jaws accept conductor size of 1 X 750 MCM ( 30 mm/1.18 in. diameter) or 2 x 500 MCM (2 x 25 mm/0.98"). AC and DC accuracy: +/- (2.0 percent of reading + 0.5A). Measurement type: Hall sensor. Nominal current range: 600 A AC, 1000 A DC. Continuous current range: 1 A - 600 A AC, 1 A - 1000 A DC. Maximum non-destructive current: 1000 A. Lowest measurable current: 0.5 A. Useable frequency: DC - 10 kHz. Output levels: 1 mV/A. With zero error adjustment. Safety: CAT III, 600 V. Maximum voltage: 600 V. Battery life: 9 V, 60 h. Maximum conductor diameter: 30mm, 2 x 25mm. Output cable length: 1.6m. With shrouded banana plugs.