A clamp meter is a type of electrical test tool that is used to measure current without the need to disconnect any wires. It works by clamping around a conductor, allowing it to measure the magnetic field that is generated by the current flowing through the wire.
Clamp meters are commonly used by electricians, HVAC technicians, and other professionals who need to measure current in electrical circuits. They are useful for troubleshooting, maintenance, and repair work, as well as for verifying the current draw of appliances and other electrical devices.