What should a technician do before starting work on an electrical circuit?

Before starting work on an electrical circuit, it is vital for a technician to shut off the power. This step is crucial for ensuring safety while performing any electrical work. Working on live circuits can pose significant risks, including electric shock, injury, or even death. By turning off the power, the technician creates a safe working environment and reduces the chances of accidents occurring due to accidental contact with energized conductors.

Shutting off the power also allows for proper testing and troubleshooting of the circuit since the technician can safely use tools and equipment without the fear of electrical hazards. It is a standard practice in the industry to prioritize safety by de-energizing circuits before any maintenance or repair work begins, underscoring the importance of this initial step in the process.