HEYI CCT clamp-on ammeter senses 50 to 300 amperes of AC current through the center conductor. The clamp-on CT features a clamp-on and split-core design that allows for one-hand installation, making installation quick and easy. The split-core design allows for non-contact current measurement via magnetic field induction, eliminating the need to take the primary line offline and disconnect it for CT installation. This approach allows for safer, simpler, and more portable current measurements.