Service entrance cable should be secured:
Within 12 inches of the masthead
At intervals not to exceed 30 inches
Service drops required building clearances:
18 feet over public roadways
15 feet over alleys
12 feet over private driveways
10 feet over finish grade and sidewalks
10 feet over platforms, decks, and porches
8 feet over roofs with less than a 4 in 12 pitch
8 feet over flat roofs
3 feet over roofs with more than a 4 in 12 pitch
3 feet horizontally from fire escapes, porches and decks
3 feet from windows
18 inches over roofs where there is a 4 foot or less overhang
Clearances in closets for light fixtures:
18 inches between fixtures and where combustibles may be stored
6 inches between flush mounted fixtures and where combustibles may be stored
Recessed lighting (typically inspected from the attic):
One half inch spacing of recessed portion of the fixture from combustible materials
3 inch spacing of thermal insulation between recessed light fixtures and combustible materials with
nothing above the fixture (Non-thermally protected)
Special appliances (such as laundry equipment):
6 feet maximum distance from outlet to appliance
Supply cords for air conditioners:
10 feet maximum for 120 volt wire
6 feet maximum for 208/240 volt wire
Electrical
Main Page Method of
Inspection Common Defects
Clearances and Fastener Requirements
Items of Inspection Electrical
Concerns Wire and Cable
Ampacities