Change List for this Rule

 

Original Version

Rule 92.1-B

 

92.1-B.    Between Cables and Messengers and Other Conductors

 

Where any cable or messenger (supply or communication) is less than 15 inches from center line of pole or is attached directly to the surface of jointly used poles, the following minimum vertical clearances shall apply between such cable and other conductors or cables (see App. G, Fig. 9):

 

Cables or messengers above

Conductors, cables or messengers 15 inches or more from center line of pole

4 feet

Unguarded racks attached to pole

6 feet

Unguarded cables or messengers attached to pole

4 feet

Guarded cables, messengers or racks attached to poles

4 feet

Unguarded cables or messengers below

All unprotected supply conductors (a)

6 feet

All grounded cables (c)

4 feet

Guarded cable, or messenger, below

Unprotected supply conductors of more than 750 volts (b)

6 feet

Unprotected supply conductors of 0-750 volts or communication circuits (c)

4 feet

 

(a)    See Rule 84.6-C for exception applicable to suitably insulated lateral runs.

 

(b)    This is not intended to prohibit the attachment of an unguarded cable or messenger 6 feet or more below supply circuits of more than 750 volts.

 

(c)    This is not intended to apply between communication cables or messengers and other communication conductors.


Strikeout and Underline Version

Rule 92.1-B

 

92.1-B.    Between Cables and Messengers and Other Conductors

 

Where any cable or messenger (supply or communication) is less than 15 inches from center line of pole or is attached directly to the surface of jointly used poles, the following minimum vertical clearances shall apply between such cable and other conductors or cables (see App. G, Fig. 9):

 

Cables or messengers above

Conductors, cables or messengers 15 inches or more from center line of pole

4 feet

Unguarded racks attached to pole

6 feet

Unguarded cables or messengers attached to pole

4 feet

Guarded cables, messengers or racks attached to poles

4 feet

Unguarded grounded cables or messengers below

All unprotected supply conductors (a)

6 feet

All grounded cables (c)

4 feet

Guarded cable, or messenger, below

Unprotected supply conductors of more than 750 volts (b)

6 feet

Unprotected supply conductors of 0-750 volts or communication circuits (c)

4 feet

 

(a)    See Rule 84.6-C for exception applicable to suitably insulated lateral runs.

 

(b)    This is not intended to prohibit the attachment of an unguarded cable or messenger 6 feet or more below supply circuits of more than 750 volts.

 

(c)    This is not intended to apply between communication cables or messengers and other communication conductors.


Final Version

Rule 92.1-B

 

92.1-B.    Between Cables and Messengers and Other Conductors

 

Where any cable or messenger (supply or communication) is less than 15 inches from center line of pole or is attached directly to the surface of jointly used poles, the following minimum vertical clearances shall apply between such cable and other conductors or cables (see App. G, Fig. 9):

 

Cables or messengers above

Conductors, cables or messengers 15 inches or more from center line of pole

4 feet

Unguarded racks attached to pole

6 feet

Unguarded cables or messengers attached to pole

4 feet

Guarded cables, messengers or racks attached to poles

4 feet

Unguarded grounded cables or messengers below

All unprotected supply conductors (a)

6 feet

All grounded cables (c)

4 feet

Guarded cable, or messenger, below

Unprotected supply conductors of more than 750 volts (b)

6 feet

Unprotected supply conductors of 0-750 volts or communication circuits (c)

4 feet

 

(a)    See Rule 84.6-C for exception applicable to suitably insulated lateral runs.

 

(b)    This is not intended to prohibit the attachment of an unguarded cable or messenger 6 feet or more below supply circuits of more than 750 volts.

 

(c)    This is not intended to apply between communication cables or messengers and other communication conductors.