What is the first important safety step to take before connecting any wires?

Lock Out Tag Out (LOTO) is the first important safety step to take before connecting any wires because it ensures that all sources of energy are properly isolated and cannot be inadvertently energized during work. This process involves placing a lock on the power source and tagging it to inform others that maintenance or repairs are being performed. This safety measure significantly reduces the risk of electrical shock or accidents, making it crucial in any electrical work, including wiring in machine rooms and hoistways.

While testing the wires, turning off the power, and checking circuit continuity are also important safety steps, they should not be the first steps taken in the process. Turning off the power, for instance, is essential, but without a lockout procedure, someone could accidentally turn the power back on while work is being performed, creating hazardous conditions. Therefore, implementing Lock Out Tag Out establishes a secure work environment before any other actions are taken.