lightning arrester

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English[edit]

English Wikipedia has an article on:
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Noun[edit]

lightning arrester (plural lightning arresters)

  1. A device used on electrical and telecommunications systems to protect the insulation and conductors from the damaging effects of lightning. Typically, it has a high-voltage terminal and a ground terminal. When a surge travels along the power line to the arrester, the current from the surge is diverted through the arrester, in most cases to earth.

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