|
|||||||
|
|
|
|||||
|
|
|||||||
February's Answer
* Indicates the correct answer.
Choose the best answer.
You have been thinking about
putting a deck on the back of your house. The size of the deck you
really want would put some of the deck under your incoming power line.
What is the minimum height
clearance you can have between the deck platform and the overhead
power line?
A) The National Electric Code does not deal with this area. The local power company has jurisdiction over the clearance height.
B) Minimum of 6 feet. This keeps the power line out of the reach of kids.
C) Minimum of 10 feet. Only basketball players could reach it.
D) Minimum of 15 feet. It takes a ladder to reach this height.
E) None of the above.
NATIONAL ELECTRIC CODE #225-18. Clearance from Ground
Overhead spans of open conductors and open multiconductor cables of not over 600 volts, nominal, shall conform to the following:
10 ft (3.05 m) — above finished grade, sidewalks, or from any platform or projection from which they might be reached where the voltage does not exceed 150 volts to ground and accessible to pedestrians only
12 ft (3.66 m) — over residential property and driveways, and those commercial areas not subject to truck traffic where the voltage does not exceed 300 volts to ground
15 ft (4.57 m) — for those areas listed in the 12-ft (3.66-m) classification where the voltage exceeds 300 volts to ground
18 ft (5.49 m) — over public streets, alleys, roads, parking areas subject to truck traffic, driveways on other than residential property, and other land traversed by vehicles such as cultivated, grazing, forest, and orchard
FPN: For clearances of conductors of over 600 volts, see National Electrical Safety Code, ANSI C2-1997.
