A structure of electrical connection is a structure of mutual electrical connection between a first power supply unit, a second power supply unit, and electric wires. The first power supply unit is provided with a first columnar terminal, and the second power supply unit is provided with a second columnar terminal. A tubular terminal is connected to an end of the electric wire. A first tubular terminal fitted to the first columnar terminal, a second tubular terminal fitted to the second columnar terminal, and a columnar terminal fitted to the tubular terminal are joined to a conductive connection plate. The entirety of the connection plate and the ends of the electric wires are covered with a cover.

A structure of electrical connection is a structure of mutual electrical connection between a first power supply unit, a second power supply unit, and electric wires. The first power supply unit is provided with a first columnar terminal, and the second power supply unit is provided with a second columnar terminal. A tubular terminal is connected to an end of the electric wire. A first tubular terminal fitted to the first columnar terminal, a second tubular terminal fitted to the second columnar terminal, and a columnar terminal fitted to the tubular terminal are joined to a conductive connection plate. The entirety of the connection plate and the ends of the electric wires are covered with a cover.

A post insulator, a post insulator keeper, and a method of securing a conductor on a post insulator are provided. A post insulator includes: an electrically insulative case including an abutment surface defining a recess; and a keeper rotatably coupled to the case between an open position in which a conductor is receivable into the recess, and a closed position to maintain the conductor in the recess.

A bail for forming a mechanical and electrical connection includes an inboard section and an outboard section. The inboard section includes an elongate, electrically conductive multi-strand conductor. The outboard section includes an elongate, electrically conductive solid rod conductor electrically connected to the multi-strand conductor.

A mechanical grounding clamp including a body, having an upper plate defining a threaded hole therethrough and having an outer surface, a lower plate spaced apart from the upper plate and having an inner surface, and a connecting plate connecting the upper plate to the lower plate, a fastener mateable with the threaded hole in the upper plate and having a proximal end and a distal end, the distal end extendable through the threaded hole of the upper plate and toward the inner surface of the lower plate. There may be a nut on the fastener for driving toward the upper plate to secure a grounding conductor to the body.

A connector assembly for providing electrical connection from an electrical device ground wire to a vehicle chassis ground comprises a wire connector, a cable, and a surface connector. The wire connector is configured to receive the electrical device ground wire. The cable is electrically connected to the ground wire. The surface connector is coupled to the cable and configured to attach to a vehicle chassis. The surface connector includes a conductive disc, an outer insulating ring, and an inner insulating ring. The conductive disc is electrically connected to the cable and includes a central opening configured to receive a fastener which attaches the surface connector to the chassis. The inner insulating ring, a portion of the lower surface of the conductive disc, and the outer insulating ring form a hermetically sealed chamber with the chassis when the surface connector is attached to the chassis.

A terminal includes: a flat surface portion; an extending portion continuous with the flat surface portion; a branch portion continuous with the extending portion and extending in a direction different from that in which the extending portion extends; and rotation stop portions continuous with the branch portion. When the terminal is attached to a bolt protruding from a fixing member and including a seat separated from the fixing member, the flat surface portion contacts the seat, the rotation stop portions extend from the branch portion toward a base end of the bolt in a protruding direction of the bolt, and at least a pair of the rotation stop portions are positioned to sandwich the seat in a direction intersecting the protruding direction to prevent rotation of the terminal with respect to the bolt.

A system for transmitting power and current includes a power cable having stranded wires and an exposed end. The stranded wires are ultrasonically welded together. Ultrasonically welding the wires creates a bundle of wires at the exposed end that may be free from air pockets, reducing oxidation and improving the current path through the cable.

A system for transmitting power and current includes a power cable having stranded wires and an exposed end. The stranded wires are ultrasonically welded together. Ultrasonically welding the wires creates a bundle of wires at the exposed end that may be free from air pockets, reducing oxidation and improving the current path through the cable.

An electrical connection element for a form-fitted or welding attachment to a sheet metal part and for receiving a cable connection device is characterized by a metallic ring that surrounds a contact region and that closely contacts the contact region by means of a permanent ring stress produced in the ring. The ring has an outer surface that forms a contact surface for the cable connection device.