Whats the principle of lightning? How protection against
lightning is achieved? Types of protection? How to select
the height of lightning spike? as per the area.
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Answer Posted / nazeer
positive charged cloud takes ground as negative in this way
it discharge its power lightning occur.it is protected by
providing lighting arrestor. Area which come under the
diameter of 45 degree from top height of lightning arrestor
will be protected by the way it should earthed at least by
70sqmm cu cable to separate earth pit which resistance
should be below 5 ohms
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