Change List for this Rule

 

Original Version

Rule 54.6-E

 

54.6-E.    Risers

 

Risers from underground cables or other conductors shall be encased in grounded iron or steel shall (or other covering of equal strength) from the ground line to a level not less than 8 feet above ground line (see App. G, Fig. 61)

 

Risers from underground cables may be encased in plastic pipes or in plastic U-shaped moulding, as provided in this rule, in lieu of the grounded iron or steel pipe required by this rule, provided that risers of circuits in excess of 750 volts shall have an effectively grounded metallic shield. Such plastic pipe shall be of material as specified in Rule 22.2-C, designated as EPC-80-pvc with a minimum nominal pipe size of 2 inches. Such plastic pipe shall be of material as specified in Rule 22.2-C, designated as EPC-80-PVC with a minimum nominal pipe size of 2 inches.  Such plastic pipe shall be of material as specified in Rule 22.2-C with a minimum nominal pipe size of 1 inch and with a minimum impact strength equal to 2- nominal EPC-80-PVC plastic pipe and installed with a backup plate of polyvinyl chloride material.

  

Any riser on the surface of a pole or not more than 18 inches from the center line of a pole shall be covered by a suitable protective covering where within a vertical distance of 8 feet from the level of communication conductors (including cables) or unprotected supply conductors (including the leads from the terminal) supported by the same pole or where within a radial distance of 6 feet from conductors not supported by the same pole.

 

Any riser more than 18 inches from the center line of a pole shall be covered by a suitable protective covering, or by securely supported impregnated fiber conduit without metal pipe, where within a vertical distance of 8 feet from the level of communication conductors (including cables) or unprotected supply conductors (including the leads from the terminal) supported by the same pole or within a radial distance of 6 feet from conductors not supported by the same pole.

 

The portion of any riser between the insulating covering required on the upper section and the metal or plastic covering required on the lower section by the foregoing shall be covered by the extension of either or both of such coverings. Where metal pipe is used as a protective covering, the fiber conduit shall not extend within 8 feet of the ground line and shall be installed in a workmanlike manner and securely supported in order to prevent it from slipping downward and exposing any upper section of the metal pipe.

 

The radial clearances between conductors, specified in Table 2, Cases 16 and 17, are not required between suitably insulated conductors in the same riser.

 

Protective covering (suitable) is not required over risers encased in effectively grounded non-climbable metal poles or iron or steel pipe attached to a steel pole, tower or other metal structure, provided the iron or steel pipe is effectively grounded and is metallically connected to such metal structure.

 

Strikeout and Underline Version

Rule 54.6-E

 

54.6-E.    Risers

 

(1)    Encased From Ground Level To 8 Feet Above The Ground:  Risers from underground cables or other conductors shall be encased in grounded iron or steel shall (or other covering of equal strength) from the ground line level to a level not less than 8 feet above ground line (see Fig. 54-4 Figures 54-4 A & B) in:

 

Risers from underground cables may be encased in

 

a)    Securely or effectively grounded iron or steel pipe (or other covering at least of equal strength); or

 

b)    nonmetallic plastic pipes conduit or in plastic U-shaped moulding, as provided in this rule, in lieu of the grounded iron or steel pipe required by this rule, provided that risers of circuits in excess of 750 volts shall have an effectively grounded metallic shield.  Such plastic pipes conduit shall be of material as specified in Rule 22.2-CB;, designated as EPC-80-pvc with a minimum nominal pipe size of 2 inches. Such plastic pipe shall be of material as specified in Rule 22.2-C, designated as EPC-80-PVC with a minimum nominal pipe size of 2 inches. 

 

c)    nonmetallic U-shaped moulding provide that risers of circuits in excess of 750 volts shall have an effectively grounded metallic shield.  Such plastic pipes U-shaped moulding shall be of material as specified in Rule 22.2-CB, with a minimum nominal pipe size of 1 inch and with a minimum impact strength equal to 2- nominal EPC-80-PVC plastic pipe and installed with a backup plate of polyvinyl chloride material.

 

(2)    Covered from 8 Feet above the Ground Level and above: Any riser on the surface of a pole or not more than 18 inches from the center line of a pole All risers from underground cables or other conductors which pass through an unrelated conductor or cable level shall be covered or encased by material as described in Rule 54.6E1 or by a suitable protective covering as described in Rule 22.2 from a distance of 8 feet above the ground to:

 

a)    Not less than 18 inches above supply conductors.

 

b)    Not less than 36 inches above communication conductors for supply risers of 750 volts or less; and

 

c)    Not less than 48 inches above communication conductors for supply risers of 750 - 7500 volts; and

 

d)    Not less than 60 inches above communication conductors for supply risers of more than 7500 volts.

 

When iron or steel pipe, or other material not meeting the minimum insulating efficiency as specified in Rule 22.2B is used it shall be terminated or covered by suitable protective covering where within a vertical distance of 8 feet from communication conductors or cables, or unprotected supply conductors.

 

(3)    Covering Joints: Where two sections of suitable protective covering join together (at joints) they shall be covered to prevent exposing the underground cables or other conductors by:

 

a)    The extension of either or both such coverings; or

 

b)    A coupling of equal material; or

 

c)    A strap of equal material.

 

(4)    Climbing Space: Protective coverings for risers, other than wood meeting the requirements of Rule 22.2 , are not allowed in the climbing space.

 

where within a vertical distance of 8 feet from the level of communication conductors (including cables) or unprotected supply conductors (including the leads from the terminal) supported by the same pole or where within a radial distance of 6 feet from conductors not supported by the same pole.

 

Any riser more than 18 inches from the center line of a pole shall be covered by a suitable protective covering, or by securely supported impregnated fiber conduit without metal pipe, where within a vertical distance of 8 feet from the level of communication conductors (including cables) or unprotected supply conductors (including the leads from the terminal) supported by the same pole or within a radial distance of 6 feet from conductors not supported by the same pole.

 

The portion of any riser between the insulating covering required on the upper section and the metal or plastic covering required on the lower section by the foregoing shall be covered by the extension of either or both of such coverings. Where metal pipe is used as a protective covering, the fiber conduit shall not extend within 8 feet of the ground line and shall be installed in a workmanlike manner and securely supported in order to prevent it from slipping downward and exposing any upper section of the metal pipe.

 

(5)    Clearance between Insulated Conductors: The radial clearances between conductors, specified in Table 2, Cases 16 and 17, are not required between suitably insulated conductors in the same riser.

 

(6)    Clearance from Centerline and Surface of Poles: Suitably insulated riser conductors or cables can be installed with less than the centerline and surface of pole clearances specified in Table 1, Cases 8 and 9 respectively.

 

(7)    Metal Poles, Towers and Other Metallic Structures:  Protective covering (suitable) is not required over risers encased in effectively grounded non-climbable metal poles or iron or steel pipe attached to a steel pole, tower or other metal structure, provided the iron or steel pipe is effectively grounded and is metallically connected to such metal structure.

 

Final Version

Rule 54.6-E

 

54.6-E.    Risers

 

(1)    Encased From Ground Level To 8 Feet Above The Ground:  Risers from underground cables or other conductors shall be encased from the ground level to a level not less than 8 feet above ground (see Figures 54-4 A & B) in:

 

a)    Securely or effectively grounded iron or steel pipe (or other covering at least of equal strength); or

 

b)    nonmetallic conduit provided that risers of circuits in excess of 750 volts shall have an effectively grounded metallic shield.  Such conduit shall be of material as specified in Rule 22.2-B

 

c)    nonmetallic U-shaped moulding provide that risers of circuits in excess of 750 volts shall have an effectively grounded metallic shield.  Such U-shaped moulding shall be of material as specified in Rule 22.2-B,

 

(2)    Covered from 8 Feet above the Ground Level and above: All risers from underground cables or other conductors which pass through an unrelated conductor or cable level shall be covered or encased by material as described in Rule 54.6E1 or by a suitable protective covering as described in Rule 22.2 from a distance of 8 feet above the ground to:

 

a)    Not less than 18 inches above supply conductors.

b)    Not less than 36 inches above communication conductors for supply risers of 750 volts or less; and

c)    Not less than 48 inches above communication conductors for supply risers of 750 - 7500 volts; and

 

d)    Not less than 60 inches above communication conductors for supply risers of more than 7500 volts.

 

When iron or steel pipe, or other material not meeting the minimum insulating efficiency as specified in Rule 22.2B is used it shall be terminated or covered by suitable protective covering where within a vertical distance of 8 feet from communication conductors or cables, or unprotected supply conductors.

 

(3)    Covering Joints: Where two sections of suitable protective covering join together (at joints) they shall be covered to prevent exposing the underground cables or other conductors by:

 

a)    The extension of either or both such coverings; or

b)    A coupling of equal material; or

c)    A strap of equal material.

 

(4)    Climbing Space: Protective coverings for risers, other than wood meeting the requirements of Rule 22.2 , are not allowed in the climbing space.

 

(5)    Clearance between Insulated Conductors: The radial clearances between conductors, specified in Table 2, Cases 16 and 17, are not required between suitably insulated conductors in the same riser.

 

(6)    Clearance from Centerline and Surface of Poles: Suitably insulated riser conductors or cables can be installed with less than the centerline and surface of pole clearances specified in Table 1, Cases 8 and 9 respectively.

 

(7)    Metal Poles, Towers and Other Metallic Structures:  Protective covering (suitable) is not required over risers encased in effectively grounded non-climbable metal poles or iron or steel pipe attached to a steel pole, tower or other metal structure, provided the iron or steel pipe is effectively grounded and is metallically connected to such metal structure.