High conductivity bunched, Class 1 Solid madugu, Class 2 makale jan karfe ko aluminum madugu, mai rufi da launi code tare da XLPE.
Don kafaffen shigarwa na tsarin watsawa da rarrabawa, tunnels da bututun mai da sauran lokuta.
Don yanayin da bai kamata ya ɗauki ƙarfin injina na waje ba.