A rotating conductor holder includes at least a first and second conductor retainer, which are mounted to and spaced apart along a rotating base member at a distance substantially corresponding to the separation distance between the two or more existing sub-conductors that are to be replaced during a restringing procedure. The base member is rotatably attached to a support, which may be mounted on at least one insulator. The at least one insulator may be mounted on an arm on the end of a boom. An actuator and linkage may be provided to rotate the base member about its support.