Which device is commonly used to measure electric current?

The device commonly used to measure electric current is indeed the ampere meter, often referred to as an ammeter. This instrument is specifically designed to measure the flow of electric charge in a circuit, expressed in amperes (A). An ammeter can be connected in series with the circuit, allowing it to measure the current flowing through any part of the circuit accurately.

In contrast, a voltmeter measures electric potential difference between two points and is used to determine voltage, not current. An ohmmeter is used to measure resistance in a circuit, helping to identify issues like faulty components or connections, but it does not measure current. A capacitance meter measures the capacitance of a capacitor and is unrelated to current measurement. Therefore, the ampere meter is the appropriate device for measuring electric current in HVACR applications.