Identify hazards by considering injury and safety data on electrical hazards, training workers to recognise warning signs such as hot outlets or switches and tripping circuit breakers, and testing and tagging regularly especially in hostile environments. Consider likelihood (use of untested equipment in homes, equipment near water, warning signs reported), how hazards arise (wear from frequent movement of plug-in equipment, older equipment with fewer safety features, no RCD in homes) and seriousness (electrocution, shock, burns, fire). Controls under the hierarchy include turning off power to isolate hazardous equipment, battery-operated devices, lock-out and tag-out of protective devices with a danger tag, RCDs, cable covers and enough power outlets to avoid overload, scheduled inspections, protocols to unplug equipment when not in use, training to identify and report faulty equipment, licensed electricians testing equipment and RCDs, permits and warning signs, and PPE such as insulated gloves, protective footwear and arc-rated face shields, using a combination. In the home care example a worker found a heater with a frayed cord and several appliances on one outlet, then sparks, and afterwards was issued a portable RCD, a fire blanket and extinguisher and a visit checklist, and the employer overhauled its risk management.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.