At what voltage level must trained first-aid personnel, including CPR providers, be available during work on exposed lines or equipment?

Trained first-aid personnel, including CPR providers, must be available during work on exposed lines or equipment at a voltage level of 50 volts or greater. This requirement is in place because exposure to electrical hazards significantly increases at this voltage level, which can result in serious injuries or fatalities. Having trained personnel on-site ensures that immediate medical assistance can be provided if an incident occurs, particularly when working with higher voltages that pose a greater risk of electrical shock. The designated threshold of 50 volts reflects industry safety standards aimed at protecting workers and ensuring a rapid response to emergencies.