Power Lines
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Overhead Lines
Why are Overhead Power Transmission Lines Not Insulated?
Why Use Bare Conductors for Overhead Transmission Lines Instead of Insulated Conductors? You may have noticed that we use insulated cables for underground power transmission, as well as in industrial…
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Questions - Answers
Why Don’t Birds and Squirrels Get Electrocuted on Power Lines?
Why Don’t Birds Setting on Power Lines Get Electrocuted? We mentioned many times that electricity is our best friend as well as a worst enemy. If you give it a…
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Questions - Answers
What Are the Colored Aerial Marker Balls on Power Lines For?
What Are Marker Balls and Why Are They Used on Power Lines? Almost all of us have seen colored balls (usually orange, yellow, red, or white) on transmission and distribution…
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Overhead Lines
Overhead Lines Protection – Faults and Protection Devices
Overhead Lines Faults & Protection in Power System Common Faults in Overhead Lines The most common causes of faults in overhead lines are: Aircraft and cars hitting lines and structures…
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Overhead Lines
Why are Overhead Power Lines Loose on Electric Poles & Towers?
Why are Overhead Power Lines Loose on Utility Poles and Transmission Towers? Transportation of people, goods, and services today is no longer a problem, as technology is rapidly advancing. Distance…
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Overhead Lines
What is the Purpose of Ground Wire in Overhead Transmission Lines?
The Role of Earth Wire or Ground Wire in Overhead Power Lines Ground wire or earth wire (also known as OPGV) is a bare conductor supported at the top of…
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