Original Version
Rule 87.4-H
87.4-H. New Rule
Strikeout and Underline Version
Rule 87.4-H
87.4-H.
From Grounded Metal Boxes, Hardware and
Equipment Associated with Supply Lines
Cables and messengers
installed on non–metallic poles or non–metallic structures shall have a minimum
clearance of 48 inches below or 72 inches above grounded metal boxes, hardware
or metal cases for equipment associated with supply lines.
EXCEPTIONS:
(1) The 72 inches above may be reduced to 48 inches where there is not a pole mounted communication drop distribution terminal above the grounded metal box, hardware or metal case for equipment, or where the grounded metal box, hardware or metal case for equipment is securely bonded to the communication cable and/or messenger (see Figure 54–4).
(2) The 72 inches above may be reduced to 48 inches when the grounded metal box, hardware or metal case for equipment is on the opposite side of a pole from a pole mounted communication drop distribution terminal.
Final Version
Rule 87.4-H
87.4-H.
From Grounded Metal Boxes, Hardware and
Equipment Associated with Supply Lines
Cables and messengers installed
on non–metallic poles or non–metallic structures shall have a minimum clearance
of 48 inches below or 72 inches above grounded metal boxes, hardware or metal
cases for equipment associated with supply lines.
EXCEPTIONS:
(1) The 72 inches above may be reduced to 48 inches where there is not a pole mounted communication drop distribution terminal above the grounded metal box, hardware or metal case for equipment, or where the grounded metal box, hardware or metal case for equipment is securely bonded to the communication cable and/or messenger (See Figure 54-4).
(2) The 72 inches above may be reduced to 48 inches when the grounded metal box, hardware or metal case for equipment is on the opposite side of a pole from a pole mounted communication drop distribution terminal.