General Order 64-A
31.1 Design, Construction and Maintenance.
Electrical supply and communication systems shall be of suitable design and construction for their intended use, regard being given to the conditions under which they are to be supported, and shall be maintained in a condition which will enable the furnishing of safe, proper and adequate service.
The owners and employees of such systems shall at all times exercise due care to reduce to a minimum the hazard of accidental injury to their own or fellow employees, to the public and other utilities due to the presence of overhead wires.
All work performed on public streets and highways shall be done in such a manner that the operations of other utilities and the convenience of the public will be interfered with as little as possible and no conditions unusually dangerous to workmen, pedestrians or others shall be established at any time.