Iintambo ze-NG-A zenziwe ngezinto eziphezulu, ezibonisa ukhuseleko lomlilo, ukuxhathisa ukunxiba kunye nokumelana noxinzelelo, kwaye zifanelekile kwiimeko ezahlukeneyo.Intambo ithembekile kwaye izinzile, ngokusebenza okuphezulu kakhulu, lukhetho lwakho olufanelekileyo lwekhebula.
Iintambo ze-NG-A zenziwe ngezinto ezisemgangathweni ophezulu, kwaye ukhetho lwe-copper copper okanye i-aluminium ingenziwa ngokwezifiso ngokuhambelana neemfuno zabathengi.I-PVC yokugquma kunye ne-sheath yenza i-insulation layer kunye ne-sheath yekhebula ineempawu zokumelana nokunxiba, ukumelana noxinzelelo kunye nokumelana nokubola.Ubomi bemveliso bungaphezulu kweminyaka engama-30 kwaye bugcina uzinzo.Ngexesha lenkqubo yokuvelisa, siya kusebenzisa inani leendlela zokuqinisekisa umgangatho, njengokulinganisa ukutywinwa kombane, (XLPE) ukubeka kunye novavanyo oluthile loxinzelelo.