How is a Load Test conducted in electrical installations?

A Load Test is conducted by applying designed load conditions that simulate the expected operational environment of the electrical installation. This method allows for the assessment of how the system will perform under specified loads, ensuring that it can handle the demands placed upon it safely and effectively.

During a Load Test, current is drawn from the electrical supply in a controlled manner to evaluate various parameters, such as voltage stability, performance of protective devices, and overall system efficiency. This testing is crucial for identifying any potential weaknesses or failure points within the electrical system that may arise during normal operation.

The other methods listed, such as measuring voltage fluctuations, random sampling of circuits, or visual inspection, do not provide a comprehensive assessment of the installation under actual load conditions. They may only yield limited information regarding the system's performance without adequately simulating real-world usage scenarios. Therefore, applying designed load conditions is the most effective and relevant approach for a Load Test in electrical installations.