Abstract: A method is disclosed for upgrading insulators of a current distribution system when the voltage of the system is to be increased. New, additional insulators are coupled with the existing ones, and the coupling is accomplished without detachment of the current conductor from the existing insulator. The mounting stud for the existing insulator is unsecured from a support member, such as a crossarm, is detached from the existing insulator, and is thereafter attached to a new, additional insulator. The two insulators are then coupled together to provide increased electrical insulation, and the mounting stud is resecured to the supporting member. Time and materials are saved by not having to detach and reattach the conductor, and by reusing the existing insulator, the conductor attachment means, and the mounting stud.