Multicore PVC insulated a sheathed cables no nā kaʻa kaʻapuni ʻaʻole i hoʻopaʻa ʻia, i hoʻopaʻa ʻia i loko o ke awāwa, kanu pololei ʻia, a i ʻole i loko o nā auwai o lalo no ka ʻoihana kalepa, ʻoihana, mining a me nā ʻōnaehana mana uila kahi i hiki ʻole i ka pōʻino mechanical.