overhead system definition
overhead system means an electrical system in which the electric supply lines, conductors or other apparatus used or which may be used for conveying, transmitting, transforming, distributing or supplying energy are placed above ground and in the open air and shall include any portions of a system so placed above ground and in the open air excepting within premises in the sole occupation or control of the Commission and excepting so much of any service line as is necessarily so placed for the purpose of supply;