ZS-Solid Core Post Insulators; ZSX-Catanary Post Insulator; C-Operation Post Insulator; W-Kurwanya Umwanda Ubwoko; Kubara nyuma yifiriti "-" - Umuvuduko ukabije; Denominator-Catilever Yatsinzwe; Hasi na Hejuru Ibikoresho byose hamwe na Hole Hole; Data nyuma ya kabiri "-" - Urwego rwumwanda.