A transmission tower (komanso pyloni yamagetsi, hydro tower ku Canada, ndi pylon ku Britain) ndi nyumba yayitali, nthawi zambiri nsanja yopangidwa ndi chitsulo yomwe imagwiritsidwa ntchito kuthandizira chingwe chamagetsi chapamwamba. M'magulu amagetsi, nsanja zotumizira zimanyamula mizere yothamanga kwambiri yomwe imanyamula mphamvu zambiri zamagetsi kuchokera kumalo opangira magetsi kupita kumalo opangira magetsi, komwe magetsi amaperekedwa kwa ogula; Komanso, mizati yothandiza imagwiritsidwa ntchito kuthandizira kutsika kwamagetsi amagetsi otsika ndi mizere yogawa yomwe imanyamula magetsi kuchokera kumagawo ang'onoang'ono kupita kwa makasitomala amagetsi.

Pali magulu anayi a nsanja zotumizira: (i) nsanja yoyimitsidwa, (ii) nsanja yomaliza, (iii) nsanja yolumikizirana, ndi (iv) nsanja yosinthira.[1] Kutalika kwa nsanja zotumizira kumachokera ku 15 mpaka 55 m (49 mpaka 180 ft); [1] zazitali kwambiri ndi nsanja za 380 m (1,247 ft) za 2,656 m (8,714 ft) kutalika kwa Jintang-Cezi Overhead Powerline Link. , pakati pa zilumba za Jintang ndi Cezi m'chigawo cha Zhejiang, China. Kutalika kwambiri kwa kuwoloka kwa magetsi amadzi ndi Ameralik Span panjira yamagetsi yaku Ameralik fjord, yokhala ndi kutalika kwa 5,376 m (17,638 ft). Pakufunika nsanja zotumizira zambiri kuti muchepetse kusintha kwanyengo, chifukwa chake mu 2020s nsanja zopatsirana zidakhala zofunika pazandale.

Zinsanja zopatsirana nthawi zambiri zimagawidwa molingana ndi mawonekedwe, kuphatikiza mtundu wagalasi, mtundu wamutu wamphaka, mtundu wapamwamba, mtundu wowuma ndi mtundu wa ndowa. Malinga ndi ntchito zake, pali kusamvana kufala mzere nsanja, kuyimitsidwa kufala mzere nsanja, ngodya kufala nsanja, osachiritsika ngodya kufala mzere nsanja (akufa mapeto nsanja), mitsinje kuwoloka nsanja, etc.