Ua kūpono nā ʻano uea maʻamau no ka helu ʻana i ka volta AC 0.6/1kV a ma lalo o nā laina hoʻohele uila me ka ʻole o ka lapalapa ahi a i ʻole nā koi pale ahi.
ʻAʻole maʻalahi ka puhi ʻana i nā ʻano kaula ahi a i ʻole ka hoʻonui ʻia ʻana o ka lapalapa i ka lōʻihi. .
ʻAʻole maʻalahi ke puhi ʻana i nā kaula ʻano pale ahi a i ʻole ka hoʻolaha ʻana o ka lapalapa i kaupalena ʻia i kekahi lōʻihi.
He kūpono kēia mau kaula no nā wahi hoʻokomo kiʻekiʻe e like me nā kikowaena mana, nā subways, tunnels, nā hale kiʻekiʻe, nā ʻoihana ʻoihana nui, nā māla aila, nā mines, etc.