Gateway Safety protective helmets are type 1 helmets. They meet ANSI Z89.1-1997 standards for class E, G, and C hard hats. These classifications deal specifically with electrical insulation, that is, it is a measure of the electrical shock resistance capability of the helmet.

What do the classifications mean? Here’s the detail:

• Class E (Electrical) helmets intended to reduce the danger of exposure to high voltage electrical conductors, proof tested at 20,000 volts. Class E is tested for force transmission first, then tested at 20,000 volts for 3 minutes, with 9 milliamps maximum current leakage; then tested at 30,000 volts, with no burn-through permitted. (formerly Class B)

• Class G (General) helmets intended to reduce the danger of exposure to low voltage electrical conductors, proof tested at 2,200 volts. Class G is tested at 2,200 volts for 1 minute, with 3 milliamps max. leakage. (formerly Class A)

• Class C (Conductive) helmets not intended to provide protection from electrical conductors. Class C is not tested for electrical resistance. (no change in class designation)