Extech MA1500 TRMS AC/DC Clamp Meter with NCV 1500A is designed with TRMS technology to ensure accuracy on non-sinusoidal waves and reads current up to 1500A. Extech MA1500 also features a large jaw clamp for up to 500MCM conductors, has built in non-contact voltage detection with LED alert, and has a large backlit dual LCD screen.