Original Version
Rule 92.2
92.2 Police and Fire Alarm Circuits
Police and fire alarm circuits which are carried on cross- arms are permitted
to occupy a position between supply circuits of 0-750 volts and other Class
C communication circuits provided the police or fire alarm circuits have
a vertical clearance of not less than 2 feet from each of such circuits and
the conductors of such police or fire alarm circuits have a clearance of
not less than 25 inches from center line of pole and have a weather-resistant
covering at least equal to double-braid weatherproofing. In lieu of conductors
with weather-resistant covering, non-metallic sheathed cable may be used.
Where such cable is supported on a messenger, the messenger shall be ungrounded
throughout its length and shall be sectionalized by means of insulators placed
6 feet to 9 feet from each attachment to crossarms. Where a 4-foot neutral
space is reserved between supply and communication circuit levels on joint
poles, it is recommended that police and fire alarm circuits which are installed
in accordance with the foregoing provisions be at a level at the center of
such a neutral space.
Police and fire alarm circuits which are less than 25 inches from center
line of pole, or are attached to the surface of pole, shall have vertical
clearances from supply conductors not less than those specified throughout
this Order for Class C communication conductors.
Strikeout and Underline Version
Rule 92.2
92.2 Police and Fire Alarm Circuits
Police and fire alarm circuits and governmental agency control circuits which
are carried on cross- arms are permitted to occupy a position between supply
circuits of 0-750 volts and other Class C communication circuits provided
the police or fire alarm circuits have a vertical clearance of not less than
2 feet from each of such circuits and the conductors of such police or fire
alarm circuits have a clearance of not less than 25 inches from center line
of pole and have a weather-resistant covering at least equal to double-braid
weatherproofing. In lieu of conductors with weather-resistant covering, non-metallic
sheathed cable may be used. Where such cable is supported on a messenger,
the messenger shall be ungrounded throughout its length and shall be sectionalized
by means of insulators placed 6 feet to 9 feet from each attachment to crossarms.
Where a 4-foot neutral space is reserved between supply and communication
circuit levels on joint poles, it is recommended that police and fire alarm
circuits which are installed in accordance with the foregoing provisions
be at a level at the center of such a neutral space.
Police and fire alarm circuits which are less than 25 inches from center
line of pole, or are attached to the surface of pole, shall have vertical
clearances from supply conductors not less than those specified throughout
this Order for Class C communication conductors.
Final Version
Rule 92.2
92.2 Police and Fire Alarm Circuits
Police and fire alarm circuits and governmental agency control circuits which
are carried on cross- arms are permitted to occupy a position between supply
circuits of 0-750 volts and other Class C communication circuits provided
the police or fire alarm circuits have a vertical clearance of not less than
2 feet from each of such circuits and the conductors of such police or fire
alarm circuits have a clearance of not less than 25 inches from center line
of pole and have a weather-resistant covering at least equal to double-braid
weatherproofing. In lieu of conductors with weather-resistant covering, non-metallic
sheathed cable may be used. Where such cable is supported on a messenger,
the messenger shall be ungrounded throughout its length and shall be sectionalized
by means of insulators placed 6 feet to 9 feet from each attachment to crossarms.
Where a 4-foot neutral space is reserved between supply and communication
circuit levels on joint poles, it is recommended that police and fire alarm
circuits which are installed in accordance with the foregoing provisions
be at a level at the center of such a neutral space.
Police and fire alarm circuits which are less than 25 inches from center
line of pole, or are attached to the surface of pole, shall have vertical
clearances from supply conductors not less than those specified throughout
this Order for Class C communication conductors.