Original Version
Rule 54.8-B4
54.8-B4) From Buildings and Structures
a) Industrial and Commercial premises: On premises used for industrial or commercial purposes service drops shall be maintained at a vertical clearance of not less than 8 feet over all or any portions of buildings and structures, except that service drops of 0-300 volts may be less than 8 feet, but not less than 12 inches, above the cornice, decorative appendage, eave, roof or parapet wall of the building served provided:
The cornice, decorative appendage, eave, roof or parapet wall less than 8 feet below such service drops is non-metallic,
The point or attachment of the service drops is not more than 18 inches back of the front face of the building wall facing the pole line from which the service drops originate, and
The cornice or decorative appendage which is less than 8 feet below such service drops does not extend more than 12 inches from said front face of building wall.
Service drops are not required to clear buildings any specified horizontal distance but shall be so installed that they clear fire escapes exits, windows, doors and other points at which human contact might be expected a horizontal distance of not less than 3 feet.
b) Residential Premises: On premises used for residential purpose only, service drops of 300-750 volts shall be maintained at a vertical clearance of not less than 8 feet over all buildings and structures.
The clearance above buildings of service drops of 0-300 volts shall be not less than the distance specified in Table 10.
Table 10 Minimum Allowable Clearances of Service Drops of 0-300 Volts Above Buildings. |
|||
| Type of Roof |
Minimum clearance above |
||
| Building Served |
Other Buildings on Premises served |
Buildings on other premises |
|
| Metal roof 3/8 pitch or less (a) |
8 ft. |
8 ft. |
8 ft. |
| Metal roof, more than 3/8 pitch |
2 ft. |
2 ft. |
8 ft. |
| Nonmetallic roof, 3/8 pitch or less |
(b) |
2 ft. |
8 ft. |
| Nonmetallic roof, more than 3/8 pitch |
(b) |
2 ft. |
2 ft. |
a. 3/8 pitch is a approximately 37 degrees from the horizontal.
b. No limit specified but the greatest clearance should be obtained.
Service Drops are not required to clear buildings on residential premises any specified horizontal distance, but shall be so installed that they clear fire escapes, exits, windows, doors, and other points at which human contact might be expected, a horizontal distance of not less than 3 feet. Service drops above a horizontal plane through the top extremity of an opening should maintain the maximum practical radial clearance, which in no event shall be less than 1 foot.
Strikeout and Underline Version
Rule 54.8-B4
54.8-B4) From Buildings and Structures
a)
Industrial
and Commercial premises: On premises used for industrial or commercial purposes service
drops shall be maintained
at a vertical clearance of not less than 8 feet over all or any portions of buildings and structures,
except that service drops of 0-300 volts may be less than 8 feet, but not less than 12
inches, above the cornice, decorative appendage, eave, roof or parapet wall of
the building served provided:
The current carrying
service conductors are insulated for the voltage being supplied (see Rule
20.8-F), and the point of attachment of the service drops is not more than 18
inches back of the front face of the building wall facing the pole line from
which the service drops originate.
The cornice, decorative
appendage, eave, roof or parapet wall less than 8 feet below such
service drops is non-metallic,
The point or attachment of the
service drops is not more than 18 inches back of the front face of the
building wall facing the pole line from which the service drops originate, and
The cornice or
decorative appendage which is less than 8 feet below such service
drops does not extend more than 12 inches from said front
face of building wall.
Service drops are not required to clear buildings any specified horizontal distance but shall be so installed that they clear fire escapes exits, windows, doors and other points at which human contact might be expected a horizontal distance of not less than 3 feet.
Where service drop crosses over metallic or non-metallic nonwalkable overhang or patio cover vertical clearance may be less than 8 feet, but not less than 24 inches providing such service drops consist of abrasion-resistant cables having a grounded metallic sheath and are insulated for the voltage being supplied.
b)
Residential Premises: On premises used
for residential purpose only, service drops of 300-750 volts shall be
maintained at a vertical clearance of not less than 8 feet over all buildings
and structures.
The
clearance above buildings of service drops of 0-300 volts shall be not less
than the distance specified in Table 10.
Table 10 Minimum Allowable Clearances of Service Drops of 0-300 Volts Above Buildings. |
|||
| Type of Roof |
Minimum clearance above |
||
| Building Served |
Other Buildings on Premises served |
Buildings on other premises |
|
| Metal roof 3/8 pitch or less (a) |
8 ft. (c) |
8 ft. |
8 ft. |
| Metal roof, more than 3/8 pitch |
2 ft. (c) |
2 ft. |
8 ft. |
| Nonmetallic roof, 3/8 pitch or less |
(b) |
2 ft. |
8 ft. |
| Nonmetallic roof, more than 3/8 pitch |
(b) |
2 ft. |
2 ft. |
a. 3/8 pitch is a approximately 37 degrees from the horizontal.
b. No limit specified but the greatest clearance should be obtained.
c. Where insulated abrasion-resistant conductors are may be reduced to 12 inches.
On premises used for residential purposes only the clearance above building of service drops of 0-300 volts may be less than the distance specified in Table 10 but not less than 12 inches over the building served nor less than 24 inches above other buildings on the premises served, provided:
The current-carrying conductors consist of abrasion-resistant cable having a grounded metallic voltage being supplied and the roof is metallic or nonmetallic, nonwalkable over hang or patio cover.
Service Drops are not required to clear buildings on residential premises any specified horizontal distance, but shall be so installed that they clear fire escapes, exits, windows, doors, and other points at which human contact might be expected, a horizontal distance of not less than 3 feet. Service drops above a horizontal plane through the top extremity of an opening should maintain the maximum practical radial clearance, which in no event shall be less than 1 foot.
Final Version
Rule 54.8-B4
54.8-B4) From Buildings and Structures
a)
Industrial
and Commercial premises: On premises used for industrial or commercial purposes service
drops shall be maintained
at a vertical clearance of not less than 8 feet over all or any portions of buildings and structures,
except that service drops of 0-300 volts may be less than 8 feet, but not less than 12
inches, above the cornice, decorative appendage, eave, roof or parapet wall of
the building served provided:
The current carrying service
conductors are insulated for the voltage being supplied (see Rule 20.8-F), and
the point of attachment of the service drops is not more than 18 inches back of
the front face of the building wall facing the pole line from which the service
drops originate.
Service drops are not required to clear buildings any specified horizontal distance but shall be so installed that they clear fire escapes exits,
windows, doors and other points at which human contact might be expected a
horizontal distance of not less than 3 feet.
Where service drop crosses
over metallic or non-metallic nonwalkable overhang or patio cover vertical
clearance may be less than 8 feet, but not less than 24 inches providing such
service drops consist of abrasion-resistant cables having a grounded metallic
sheath and are insulated for the voltage being supplied.
b)
Residential Premises: On premises used
for residential purpose only, service drops of 300-750 volts shall be
maintained at a vertical clearance of not less than 8 feet over all buildings
and structures.
The
clearance above buildings of service drops of 0-300 volts shall be not less
than the distance specified in Table 10.
Table 10 Minimum Allowable Clearances of Service Drops of 0-300 Volts Above Buildings. |
|||
| Type of Roof |
Minimum clearance above |
||
| Building Served |
Other Buildings on Premises served |
Buildings on other premises |
|
| Metal roof 3/8 pitch or less (a) |
8 ft. (c) |
8 ft. |
8 ft. |
| Metal roof, more than 3/8 pitch |
2 ft. (c) |
2 ft. |
8 ft. |
| Nonmetallic roof, 3/8 pitch or less |
(b) |
2 ft. |
8 ft. |
| Nonmetallic roof, more than 3/8 pitch |
(b) |
2 ft. |
2 ft. |
a. 3/8 pitch is a approximately 37 degrees from the horizontal.
b. No limit specified but the greatest clearance should be obtained.
c. Where insulated abrasion-resistant conductors are may be reduced to 12 inches.
On premises used for residential purposes only the clearance above building of service drops of 0-300 volts may be less than the distance specified in Table 10 but not less than 12 inches over the building served nor less than 24 inches above other buildings on the premises served, provided:
The current-carrying conductors consist of abrasion-resistant cable having a grounded metallic voltage being supplied and the roof is metallic or nonmetallic, nonwalkable over hang or patio cover.
Service Drops are not required to clear buildings on residential premises any specified horizontal distance, but shall be so installed that they clear fire escapes, exits, windows, doors, and other points at which human contact might be expected, a horizontal distance of not less than 3 feet. Service drops above a horizontal plane through the top extremity of an opening should maintain the maximum practical radial clearance, which in no event shall be less than 1 foot.