What should be prioritized for safety when working on electrical circuits?

Prioritizing complete disconnection from the power source is critical for safety when working on electrical circuits. This step ensures that there is no live electricity flowing through the circuit, significantly reducing the risk of electrocution or electrical burns. Before beginning any work on electrical systems, verifying that the circuit is completely de-energized protects the technician and allows for safe handling of components.

Additionally, while considerations such as power efficiency, comfort, and speed of repair may also be relevant in their respective contexts, they do not take precedence over safety. The primary concern must always be to protect oneself and others from the inherent dangers involved with electricity. By ensuring a complete disconnection, technicians create a safe working environment where they can perform necessary repairs or maintenance without the immediate threat of electric shock.