This specification covers acceptance testing of dielectric overfoot and overshoe footwear designed to provide additional isolation or insulation of workers if in accidental contact with energized electrical conductors, apparatus, or circuits. Styles of overshoe footwear covered under this specification shall be designated as: Rubbers, designed to be worn over existing footwear and to cover only the foot of the worker; Boots, designed to be worn over existing footwear and to cover the foot and lower leg of the worker to below the knee; and Galoshes, designed to be worn over existing footwear and to cover the foot and lower leg of the worker to below the knee and having fasteners to close the folded front flaps. Each article of overshoe footwear shall be given a proof test and shall withstand the 60-Hz ac proof-test voltage (rms value) or the dc proof-test voltage (average value).