Isolatori <a href="https://it.wikipedia.org/wiki/media_tensione" class="extiw" title="it:media tensione">media tensione</a> (in vetro) e isolatori di intestazione cavo (in marrone)
<a href="https://en.wikipedia.org/wiki/it:User:Gianfranco" class="extiw" title="w:it:User:Gianfranco">Gianfranco</a> at <a href="https://en.wikipedia.org/wiki/it:" class="extiw" title="w:it:">Italian Wikipedia</a>
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