Unless danger against contact with high voltage overhead lines has been effectively guarded against as provided in section 55-2403, Idaho Code, a contractor, individually or through an agent or employee or as an agent or employee, shall not:
(1) Perform or require any other person to perform any function or activity upon any land, building, highway, waterway or other premises if at any time during the performance of such function or activity it is possible that the contractor or the person or any part of any tool or material used by the contractor or the person could move or be placed or brought closer to any high voltage overhead line than the following clearances: For lines nominally rated at fifty (50) kilovolts or less, ten (10) feet of clearance;
(2) For lines nominally rated at over fifty (50) kilovolts, ten (10) feet plus four-tenths (.4) of an inch for each kilovolt over fifty (50) kilovolts.
(3) Operate any mechanical or hoisting equipment or any load of such equipment, any part of which is capable of vertical, lateral or swinging motion closer to any high voltage overhead lines than the clearances specified in subsections (1)(a) and (b) of this section.