Overhead lines
Overhead lines
(OP)
What are the design standards (load, embedment, guys etc.) of wooden pole to carry secondary overhead three 500 MCM power conductors?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: Overhead lines
RE: Overhead lines
http://standards.ieee.org/nesc/index.html
RE: Overhead lines
1. Conductor tension
2. Conductor sag and ground clearance. Ground clearance depends on what you are crossing. Example if the area requires 20 ft clearance you will need a pole of sufficient height to maintain the 20 ft plus the sag.
3. Load Span. The load span is equal to the distance between low points of sag between adjacent poles. This length will allow you to calculate the vertical load on the pole due to conductor weight.
4. Horizontal loading. This is due to wind force on the conductors, pole, other equipment, dead end conductors and conductor change in direction. Your location will determine if ice load on the conductors should be included.
Once you have determine the loads acting on the pole you can determine the required pole diameter and thus the class of the pole.
RE: Overhead lines
RE: Overhead lines
RE: Overhead lines