Abstract: This invention provides a device enabling movement of an electrical conductor through, or from one side to the other of, a string of insulators coupled between a supporting tower and a yoke plate, and has an upper frame with clamping jaws engageable with one of the insulators, a lower frame connectable to the yoke plate, and manually operable mechanism interconnecting the two frames for selectively moving them relative to each other in the direction of the axis of the insulator string to permit uncoupling of a portion of the string, movement therethrough of the conductor, and recoupling of the string.

Abstract: A method of stringing a bundle of cables from a suspension bracket suspended from a tower cross arm by insulator strings includes securing a temporary connection along at least a part of one of the strings to provide a temporary suspension connection which enables the string to be uncoupled, so that one of the cables can be passed through the uncoupled string. The string is then recoupled and the temporary connection is removed to allow the conductor to be secured to the suspension bracket. This method enables one or more cables to be secured above the suspension bracket for reducing the voltage gradient across the lowermost insulators of the strings.

Abstract: A transformer caddie comprises: an inverted U-shaped frame having a horizontal top portion and front and rear vertical support means; transformer hoist means mounted substantially at the center of the top portion and being operable to suspend a transformer therebelow; front and rear wheels, preferably comprising front and rear pairs of adjacently disposed wheels; plural wheel mounting bracket means, each being rotatably connected to an associated vertical support means to mount one of the wheels for revolution about a horizontal axis, and also for steering about a steering axis; and steering means for rotating the wheel mounting bracket means to effect steering of the caddie, the steering means preferably comprising independently operable front and rear steering means, each being operable to effect tandem steering of both of an associated pair of wheels. The caddie is operable to efficiently transport and locate transformers and other electrical equipment in inaccessible areas.