Original Version
Rule 54.8-B4b
54.8-B4b) 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.
Strike out and Underline Version
Rule 54.8-B4b
54.8-B4b)
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 sheath or neutral supported service drop cable manufactured in accordance with Standard No. WC-%-1961 or Standard No. WC-3-1959 of the National Electric Manufactures Association and are insulated for the 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-B4b
54.8-B4b)
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 sheath or neutral supported service drop cable manufactured in accordance with Standard No. WC-%-1961 or Standard No. WC-3-1959 of the National Electric Manufactures Association and are insulated for the 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.