How are new safety helmets tested for insulation?

New safety helmets are tested for insulation primarily to ensure that they can adequately protect the wearer from electrical hazards. The correct answer reflects the industry-standard requirement for electrical protective helmets, which is to withstand tests of 30,000 volts. This level of insulation testing is critical because it simulates high-voltage conditions that may occur in environments where electrical work is performed.

By being able to withstand 30,000 volts, these helmets demonstrate their effectiveness in providing a barrier against electrical shock, thereby helping to prevent serious injuries or fatalities in the event of accidental contact with live electrical sources.

Lower voltage requirements would not be sufficient for the diverse and potentially hazardous electrical environments workers may encounter, and thus, the operational safety standards necessitate this higher threshold.