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why stay insulator is not used with stay wire for 11kv Lines.
Whereas it is used for LT lines ?
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Answer Posted / david
The stay insulator 'should' be used for all 'insulating' ie timber poles carrying any cables with more than 100v. This includes 415v, 11KV, 33KV and higher. It is a 2nd level of protection to prevent fallen uninsulated power cables from transmitting energy into the ground, creating dangerous step potentials and touch voltages for wayward humans. The line to earth voltages are typically lower than the 11KV or 33KV, and a smaller stay isolation insulator can be used.
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