Applicability. The provisions of this article shall
not apply to electrical installations in mines, ships, railway cars,
automotive equipment or the installations or equipment employed by
a railway, electrical or communications utility in the exercise of
its function as a utility and located outdoors or in buildings used
exclusively for that purpose. This article shall not apply to any
work involved in the manufacture, assembly, test or repair of electrical
machinery, apparatus, materials and equipment by a person, firm or
corporation engaged in electrical manufacturing as their principal
business. This article shall not apply to any building which is owned
or leased in its entirety by the governments of the United States,
the State of New York or the County of Erie.