Original Version
Rule 89.3
89.3 Telephone Instruments on Poles or Structures
Where a telephone instrument is attached to the surface of a
pole or structure at less than 8 feet vertically above the ground (or at
any elevation on a grounded metal pole or structure) and is connected to
a private communication circuit constructed on the same pole line with, or
colinear with, a Class H supply circuit, or is connected to a private communication
circuit carried on crossarms with supply conductors of 750-21,000 volts,
such instrument shall be enclosed in a suitable box of wood or equivalent
insulating material, which shall be locked to prevent access by unauthorized
persons. Where such a telephone instrument is so attached, connected, and
enclosed, unless isolated from the communication circuit by an adequate insulating
transformer, a suitably insulated stool or platform, on which a person can
stand while using the instrument, shall be provided.
Strikeout and Underline Version
Rule 89.3
89.3 Telephone Instruments on Poles or Structures
Where a telephone instrument is attached to the surface of
a pole or structure at less than 8 feet vertically above the ground (or at
any elevation on a grounded metal pole or structure) and is connected to
a private communication circuit constructed on the same pole line with, or
colinear with, a Class H supply circuit, or is connected to a private communication
circuit carried on crossarms with supply conductors of 750- 21,000
22,500 volts, such instrument shall be enclosed in a suitable box
of wood or equivalent insulating material, which shall be locked to prevent
access by unauthorized persons. Where such a telephone instrument is so attached,
connected, and enclosed, unless isolated from the communication circuit by
an adequate insulating transformer, a suitably insulated stool or platform,
on which a person can stand while using the instrument, shall be provided.
Final Version
Rule 89.3
89.3 Telephone Instruments on Poles or Structures
Where a telephone instrument is attached to the surface of
a pole or structure at less than 8 feet vertically above the ground (or at
any elevation on a grounded metal pole or structure) and is connected to
a private communication circuit constructed on the same pole line with, or
colinear with, a Class H supply circuit, or is connected to a private communication
circuit carried on crossarms with supply conductors of 750-22,500 volts,
such instrument shall be enclosed in a suitable box of wood or equivalent
insulating material, which shall be locked to prevent access by unauthorized
persons. Where such a telephone instrument is so attached, connected, and
enclosed, unless isolated from the communication circuit by an adequate insulating
transformer, a suitably insulated stool or platform, on which a person can
stand while using the instrument, shall be provided.