What action should be taken at the point of work to ensure safety?

Testing for the absence of voltage is a critical safety practice that should be performed at the point of work before beginning any task involving electrical equipment or circuits. This action ensures that there is no electrical potential present, which significantly reduces the risk of electric shock or electrocution for workers. By confirming that the voltage is absent, workers can proceed with greater confidence and with the necessary precautions in place.

In contrast, other actions such as visual inspections or ensuring tools are accounted for, while beneficial for overall safety and organization, do not directly address the immediate and critical concern of electrical hazards. Using personal protective equipment is essential but does not substitute the need for confirming that the equipment is de-energized before work starts. Therefore, testing for the absence of voltage stands out as the most effective measure to ensure safety at the work site.