ZS-Solid Core Post Insulators;ZSX-Catanary Post Insulators;C-Operation Post Insulators;W-Ate-pollution Type;Numerator after frist"-"-Value Fa'atatau; Denominator-Catilever Uta ua le manuia;N-Torsion Fai le uta;L- Fa'apipi'i pito i lalo ma le pito i luga o lo'o i ai uma i le Screw Hole; Fa'amatalaga pe a mae'a le lua"-"-Vaega o Fa'alelalolagi Level.
