What safety measure is essential for preventing overload in electrical circuits?

The installation of automatic shut-off systems is an essential safety measure for preventing overload in electrical circuits because these systems are designed to monitor electrical loads continuously. When the current exceeds a predefined level, the automatic shut-off system can disconnect the power supply to protect the circuit from excessive heat generation and potential hazards like electrical fires.

This proactive approach ensures that the system reacts in real time to potentially dangerous situations, thus maintaining the overall safety and integrity of the electrical installation. It integrates well with modern electrical management practices, providing both safety and convenience, as it minimizes the need for manual intervention in hazardous situations.

In contrast, using wires of different colors is primarily a means of identification and does not inherently prevent overloads. Periodic visual inspections are important for maintaining electrical systems, but they may not catch imminent overload situations before they occur. Limiting the number of appliances connected is a good practice, but without automatic shut-off systems, it does not provide the immediate response needed to prevent overloads if the limit is accidentally exceeded.