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Back-mounted
A termination assembly mounted from the inside of a panel or box with its mounting flange inside the equipment.

Band Marking
A continuous circumferential band applied to a wire at regular intervals for identification.

Bare Conductor
A conductor not covered with insulating material.

Barrel
1.) Connector barrel: The section of the terminal, splice, or contact that accommodates the stripped conductor.
2.) Insulation barrel: The section of the terminal, splice, or contact that accommodates the conductor insulation.
3.) Open barrel: The section of a cap that accommodates the conductor.

Batch Number
See Lot Number.

Bayonet Coupling
A quick-coupling device for plug and receptacle connectors. Mating is accomplished by rotation of the two parts under pressure.

Beaming
Crosslinking by means of high-energy electrons.

Binder
A spiral wrapping of a thread to hold together the members of a cable.

Blocking
The sticking together of insulated wires; usually caused by heat.

Body
A protective covering of resilient material over any portion of a cable, wire termination, or termination assembly in addition to normal jacketing of insulation, to prevent entry of moisture. Also, a form for holding potting compound.

Bonding Temperature
Temperature above which adhesive melts and flows sufficiently to form an adhesive bond between substrates.

Braid
A woven metallic or fiber layer applied over wire or cable to act as a protective barrier or shielding.

Braid Angle
The angle between the braid strands and the axis of the cable.

Breakdown Voltage
The voltage at which an insulator or dielectric fails to maintain the applied voltage.

Breakout
A region in a harness assembly where a wire or a group of wires is detached to form a separate, terminated branch. Also known as a transition.

Brittle Temperature
The temperature below which a material becomes brittle, often measured by a cold impact test.

Bunch Stranding
A method of twisting individual strands to form a finished stranded conductor. Specifically, a number of strands twisted together in a common direction and with a uniform pitch (or twist) per inch.

Bus
A communal circuit over which data or power is transmitted.