Change List for this Rule

 

Original Version
Rule 92.1-A

 

92.1-A.    Between Low Voltage Rack Conductors and Other Conductors

 

On jointly used poles, the following minimum vertical clearances shall apply between 0-750 volt supply conductors in rack construction and other conductors (see App. G, Fig 9):

 

Racks above

Conductors or cables 15 or more from center line of pole

4 feet

Unguarded cables, messengers or racks attached to poles

6 feet

Guarded cables, messengers, or racks attached to poles

4 feet

Unguarded racks below

All circuits

6 feet

Guarded rack below

Circuits of 0-20,000 volts or communication circuits

4 feet


Strikeout and Underline Version
Rule 92.1-A


92.1-A.    Between Low Voltage Rack Conductors and Other Conductors

 

On jointly used poles, the following minimum vertical clearances shall apply between 0-750 volt supply conductors in rack construction and other conductors (see App. G, Fig 9):

 

Racks above

Conductors or cables 15 or more from center line of pole

4 feet

Unguarded cables, messengers or racks attached to poles

6 feet

Guarded cables, messengers, or racks attached to poles

4 feet

Unguarded racks below

All circuits

6 feet

Guarded rack below

Circuits of 0-20,000 21,000 volts or communication circuits

4 feet

 

Final Version
Rule 92.1-A


92.1-A.    Between Low Voltage Rack Conductors and Other Conductors

 

On jointly used poles, the following minimum vertical clearances shall apply between 0-750 volt supply conductors in rack construction and other conductors (see App. G, Fig 9 ):

 

Racks above

Conductors or cables 15 or more from center line of pole

4 feet

Unguarded cables, messengers or racks attached to poles

6 feet

Guarded cables, messengers, or racks attached to poles

4 feet

Unguarded racks below

All circuits

6 feet

Guarded rack below

Circuits of 0-21,000 volts or communication circuits

4 feet