When encountering an electrical fire, what is the safest course of action?

Cutting off the electrical supply is the safest course of action when encountering an electrical fire because it helps to eliminate the source of the fire, reducing the risk of re-ignition and protecting firefighters and bystanders during firefighting efforts. Electrical fires are unique due to the potential for electrocution and the fact that water is a conductor of electricity, which can exacerbate the danger if applied directly.

By first ensuring that the electrical supply is turned off, it creates a safer environment to assess the situation and determine the best method for extinguishing the fire. Once the power is cut off, firefighters can proceed with appropriate measures, such as using a suitable extinguisher designed for electrical fires, like a Class C extinguisher.

The other actions might not adequately address the immediate risk associated with an electrical fire or could even worsen the situation. For example, using water can introduce serious risks of electrical shock. Activating a fire alarm system is important for alerting others to evacuate but does not directly mitigate the fire's hazard. Calling emergency services is necessary as part of the overall response but should be coupled with cutting off the electricity first to minimize danger.