General Order 128

8051.    No persons shall build or rebuild any subway, manhole, chamber, or underground room used or to be used to contain, encase, cover, or conduct any wire, cable, or appliance, to conduct or handle electricity, unless such subway, manhole, chamber, or underground room has an inside measurement of not less than four feet at the maximum points between the side walls thereof, and between the end walls thereof, and not less than five feet at all points between the floor and the top or ceiling thereof, or if circular in shape, at least four feet diameter inside measurement and not less than five feet at all points between the floor and ceiling thereof.  This section does not apply to any such subway, manhole, chamber, or underground room, within which it is not intended or required that any human being perform work or labor or be employed.  This section does not apply where satisfactory proof is submitted to the Commission that it is impracticable or physically impossible to comply with this law within the space or location so designated by the proper municipal authorities.

8052.    No person shall build or rebuild in any subway, manhole, chamber or underground room used or to be used to contain, encase, cover, or conduct any wire, cable, or appliance to conduct or handle electricity, any opening to outer air which is less than 26 inches if circular in shape, or less than 24 inches by 26 inches clear measurement if rectangular in shape.
Appendix D, Article 3

8053.    No person shall build or rebuild in any subway, manhole, chamber or underground room, used or to be used to contain, encase, cover, or conduct any wire, cable, or appliance to conduct or handle electricity, any opening which is at the surface of the ground, within the distance of three feet at any point from the rail of any railway or streetcar track.  This section does not apply where satisfactory proof is submitted to the Commission that it is impracticable or physically impossible to comply with this law in the space or location so designated by the proper municipal authorities.

8054.    No person shall build or rebuild any subway, manhole, chamber or underground room, used or to be used, to contain, encase, cover, or conduct any wire, cable, or appliance to conduct or handle electricity unless the floor of the subway, manhole, chamber, or underground room is made of stone, concrete, brick, or other similar material not subject to decomposition.  This section does not apply to any subway, manhole, chamber, or underground room within which it is not intended or required that any human being perform work or labor or be employed.

8055.    No person shall build or rebuild or maintain any subway, manhole, chamber, or underground room used, or to be used, to contain, encase, cover, or conduct any wire, cable, or appliance to conduct or handle electricity, unless such subway, manhole, chamber, or underground room is kept at all times in a sanitary condition and free from stagnant water, seepage, or other drainage, or any offensive matter dangerous to health, either by sewer connection or otherwise.  This section does not apply to any subway, manhole, chamber, or underground room within which it is not intended or required that any human being perform work or labor, or be employed.

8056.    The Commission may inspect all work which is included in the provisions of this article, and may make such further additions or changes as the Commission deems necessary for the purpose of safety to employees and the general public.  The Commission shall enforce the provisions of this article.

8057.    Any violation of any provision of this article is a misdemeanor.