Which equipment is critical for measuring stray currents?

The multimeter is critical for measuring stray currents because it is a versatile instrument that can measure voltage, current, and resistance in various configurations. Stray currents can flow through unintended paths, and monitoring them typically requires measuring small voltages and currents to identify and assess their impact on the environment.

In practice, a multimeter can be employed to determine the presence of stray currents by measuring the current flowing through different circuit paths or grounding systems. It allows technicians to evaluate the electrical conditions of structures, pipelines, and other conductive materials for safety and performance, especially in cathodic protection systems.

While other types of tools like amperage meters and voltmeters can measure specific parameters (like current or voltage individually), they do not offer the comprehensive, multifunctional capabilities of a multimeter, making it the most effective choice for assessing stray currents. The resistance meter has a more limited application in this context, focusing on resistance rather than directly on current measurements.