A. An Underwriters Laboratories approved lightning arrestor or its equivalent is required on all antenna lead-ins unless the lead-in is of the metal shielded type, with the metal shield properly grounded.
B. Lead-in conductors attached to buildings shall be so installed that they cannot swing within two feet (2') of conductors carrying two hundred fifty (250) volts or less, or within ten feet (10') of conductors carrying more than two hundred fifty (250) volts. The clearance between lead-in conductors and any conductor forming part of a lightning rod system shall be not less than six feet (6'). That part of the lead-in that comes in contact with the building shall be supported at intervals of not more than fifteen feet (15') apart.
C. Conductive supporting poles, masts or other structures supporting antennas shall be permanently and effectively grounded with a minimum of #10 copper or #8 aluminum wire. Poles or masts which are themselves the sole antenna, of course, exempt from this rule.
D. No television mast, pole, tower or antenna shall be mounted or attached to a chimney.
E. Poles or masts over twelve feet (12') in height must be guyed with three (3) or more wires to one position on the pole or mast. Masts or poles twenty feet (20') to thirty feet (30') must be guyed to a minimum of two (2) positions on the pole or mast. The angle of the guys must not be less than thirty degrees (30°) from the vertical mast, wire used shall be of the stranded rustproof type. Anchors shall be of equal strength or stronger than the combined wires connected to them. All guys fastened to the ground shall be protected by a sufficient safety guard to a minimum of eight feet (8') vertically from the ground.
F. All self-supporting towers, poles or masts over ten feet (10') in height shall be designed and installed to withstand an actual wind velocity of ninety (90) miles per hour.
G. Metal supporting poles, masts, towers or other structures located on buildings provided with lightning protection must have an interconnection between the grounding conductors and the lightning surge conductors.
H. Plumbing vent stacks or natural gas piping shall not be used to ground antenna masts, poles or towers, instead all grounding conductors shall be attached, preferably to a cold water pipe supplied by an underground water distribution system, with the water meter properly jumpered. Where not available, grounding conductors shall be attached to a standard driven ground rod six feet (6') or longer. No pole, mast, tower or structure used to support antenna shall be so located that in falling it might fall across a utility distribution line over two hundred fifty (250) volts unless that mast, pole, tower or structure has a double strength guy in such a position so as to keep that pole, mast, tower, or structure from falling across such utility line.
I. All towers, mast, poles, or antenna attached to a building shall be noncombustible and corrosive resistant. (Ord. 189, 6-6-1956)