While working on live circuits, what should always be maintained for safety?

Maintaining one hand behind the back while working on live circuits is a critical safety practice. This technique minimizes the risk of electrical shock by reducing the likelihood that a current will pass through the body. If both hands are in contact with the circuit, there is a higher chance that the electrical current could travel from one hand to the other through the heart or vital organs, potentially resulting in serious injury or death.

By keeping one hand behind the back, a technician limits the path that electrical current can take through their body. This method discourages the possibility of electrical current passing across the chest, which is the most dangerous route in terms of affecting heart function.

It is essential for technicians to be aware of safe practices when working with electricity, as improper handling can lead to severe accidents. Other approaches may not provide the same level of increased safety and could still expose the technician to risks associated with working on or near live circuits.