ZS-Solid Core Post Insulators;ZSX-Catanary Post Insulators;C-Operation Post Insulators;W-Anti-pollution Type;Numerator after frist"-"-Rated Voltage;Denominator-Catilever Haawe Ha'alele;N-Torsion Ha'alele Haawe;L- Loaʻa nā ʻāpana lalo a me luna me ka Screw Hole; ʻikepili ma hope o kekona "-"-Class of Pollution Level.
