What does a thermal imaging camera detect in electrical systems?

A thermal imaging camera is designed to detect heat emissions from objects, including components of electrical systems. When it comes to electrical systems, the camera identifies temperature differences and can highlight anomalies such as overheating connections, overloaded circuits, or failing components.

This functionality is critical in preventative maintenance, as excessive heat can indicate problems that could lead to equipment failure or fire hazards. By visualizing heat patterns, electricians can assess the health of electrical systems without needing direct contact or disassembly, enhancing safety and efficiency in the maintenance process.

The other options refer to measurements that require direct electrical testing or specialized equipment. Voltage levels, electrical current, and resistance levels are typically measured with multimeters or oscilloscopes, whereas thermal imaging specifically focuses on heat-related phenomena, making it an invaluable tool for diagnosing electrical issues.