Original Version

Rule 54.4-G

54.4-G.    From Grounded Metal Boxes, Hardware and Equipment

All grounded metal boxes, hardware and equipment, on non-metallic poles or non-metallic structures shall be a minimum of 36’’ above and 30’’ below the next level of unprotected conductors.  Such equipment shall have a minimum clearance of 48 inches above or below communication line conductors of different ownership.  See Figure 54-4.

EXCEPTIONS:

(1)    0-750 volt conductors (not including jumpers) - a 10" radial clearance is required.

(2)    Equipment (e.g. in Rule 58.6) operated at 0 - 750 volts and mounted not less than 15 inches from the surface of the pole. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

(3)    Grounded portions of risers and their associate" terminal fittings, brackets and hardware. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

(4)    Lightning arrestors, grounded insulator pins and insulators with grounded bases and their associated supports. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

Any item grounded in accordance with this rule shall be effectively grounded (see Rule 33.3).

Strikeout and Underline Version

Rule 54.4-G

54.4-G.    From Grounded Metal Boxes, Hardware and Equipment

All grounded metal boxes, hardware and metal cases for equipment, on non-metallic poles or non-metallic structures shall be a minimum of 36" inches above and 30" inches below the next level of unprotected conductors. Such equipment shall have a minimum clearance of 48 inches above or 72 inches below communication line conductors, cables and messengers of different ownership. See Figure 54-4 .

EXCEPTIONS:

(1)    0-750 volt line conductors (not including incidental pole wiring. e.g. jumpers) a 10" inch radial clearance is required.

(2)    Equipment (e.g. in Rule 58.6 ) operated at 0-750 volts and mounted not less than 15 inches from the surface of the pole. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17 .

(3)    Grounded portions of risers and their associated terminal fittings, brackets and hardware. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17 .

(4)    Lightning arresters, grounded insulator pins, and insulators with grounded bases and their associated supports. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17 .

(5)    The 72 inches may be reduced to not less than 48 inches where a communication cable does not have a pole mounted drop; distribution terminal located 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.

(6)    The 72 inches may also 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.

Any item grounded in accordance with this rule shall be effectively grounded (see Rule 33.3).

Final Version

Rule 54.4-G

54.4-G.    From Grounded Metal Boxes, Hardware and Equipment

All grounded metal boxes, hardware and metal cases for equipment, on non-metallic poles or non-metallic structures shall be a minimum of 36 inches above and 30 inches below the next level of unprotected conductors. Such equipment shall have a minimum clearance of 48 inches above or 72 inches below communication line conductors, cables and messengers of different ownership. See Figure 54-4 .

EXCEPTIONS:

(1)    0-750 volt line conductors (not including incidental pole wiring, e.g. jumpers) a 10 inch radial clearance is required.

(2)    Equipment (e.g. in Rule 58.6) operated at 0-750 volts and mounted not less than 15 inches from the surface of the pole. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

(3)    Grounded portions of risers and their associated terminal fittings, brackets and hardware. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

(4)    Lightning arresters, grounded insulator pins, and insulators with grounded bases and their associated supports. These clearances shall not be less than the radial clearances required for incidental pole wiring by Table 2, Cases 16 and 17.

(5)    The 72 inches may be reduced to not less than 48 inches where a communication cable does not have a pole mounted drop distribution terminal located 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.

(6)    The 72 inches may also 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.

Any item grounded in accordance with this rule shall be effectively grounded (see Rule 33.3).