Original Version

Rule 57.4-H

57.4-H.    From Non-climbable Street Lighting or Traffic Signal Poles or Standards:

Messengers and metal-sheathed cables passing unattached which are bonded and grounded as specified in Rule 57.8, shall clear non-climbable street lighting and traffic signal poles or standards, including mastarms, brackets, and lighting fixtures; a radial distance of 15 inches as specified in Table 1, Case 10, Column D; except when the conductors are mechanically protected from abrasion by materials specified in Rule 22.2. Such mechanical protection shall extend 15 inches in each direction along the cable from centerline if pole, standard, attaching mastarms or fixtures; whether passing above, below or alongside. The conductors shall be installed in such a manner so as not to interfere with light distribution from lighting fixtures and shall not hamper workmen changing lamps or maintaining equipment.

Strikeout and Underline Version

Rule 57.4-H

57.4-H.    From Non-climbable Street Lighting or Traffic Signal Poles or Standards:

Messengers and metal-sheathed cables passing unattached which are bonded and grounded as specified in Rule 57.8, shall clear passing (unattached) non-climbable street lighting and traffic signal poles or standards, including mastarms, brackets, and lighting fixtures; a radial distance of 15 inches as specified in Table 1, Case 10, Column D; may have a clearance of less than 36 inches specified in Table 1, Case 10, Column D, but shall have a clearance of not less than 15 inches except when the conductors are mechanically protected from abrasion by materials specified in Rule 22.2. Such mechanical protection shall extend not less than 15 inches in each direction along the cable from centerline if pole, standard, attaching mastarms or fixtures; whether passing above, below or alongside. The conductors shall be installed in such a manner so as not to interfere with light distribution from lighting fixtures and shall not hamper workmen changing lamps or maintaining equipment.

Final Version

Rule 57.4-H

57.4-H.    From Non-climbable Street Lighting or Traffic Signal Poles or Standards:

Messengers and metal-sheathed cables which are bonded and grounded as specified in Rule 57.8, passing (unattached) non-climbable street lighting and traffic signal poles or standards, including mastarms, brackets, and lighting fixtures may have a clearance of less than 36 inches specified in Table 1, Case 10, Column D, but shall have a clearance of not less than 15 inches except when the conductors are mechanically protected from abrasion by materials specified in Rule 22.2. Such mechanical protection shall extend not less than 15 inches in each direction along the cable from centerline if pole, standard, attaching mastarms or fixtures; whether passing above, below or alongside. The conductors shall be installed in such a manner so as not to interfere with light distribution from lighting fixtures and shall not hamper workmen changing lamps or maintaining equipment.