What is a crucial safety tip when working with electrical boxes?

Always ensuring that power is off before making modifications to electrical boxes is a fundamental safety measure. This precaution significantly reduces the risk of electric shock, which can occur if a worker unwittingly comes into contact with live wires or energized components. By confirming that the circuit is de-energized, workers can safely install, repair, or inspect electrical systems without the immediate danger posed by active electrical currents.

While maintaining tools, being aware of weather conditions, and having fire extinguishers available contribute to a safer working environment, they do not address the immediate risk of encountering live electrical sources during modifications. Thus, turning off the power is the most critical step to ensure personal safety and prevent accidents in electrical work.