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<p><strong>a surge high voltage</strong><strong>b Direct lightning strocks</strong><strong>c indirect lightning strocks</strong><strong>d Switching over voltages</strong></p>
This wire is called surge arrests it protects the circuit from lightening thunder . it is a very thin wire placed above the phase lines on a the top of a pole . it is used in the form of an antenna on the top of the buildings ..
The correct answer is b.
As a specialists answered before me -B
That must be B, to protect form direct lightning strocks, as you do with buildings as well
DIRECT LIGHTNING
"b" Direct lightning strikes is my answer
b Direct lightning strocks
I believe answer is choice "B"