Power cord that has serving, braid, foil or a combination of these. A served shield is made by closely wrapping wire strands around the core.

A cable in which each insulated conductor is enclosed in a conducting envelope so constructed that substantially every point on the surface of the insulation is at ground potential or at some predetermined potential with respect to ground under normal operating conditions.

Shielding is the process of wrapping material around the outside of a wire or cable to provide two major functions: to act as a barrier to keep external signals from getting in and internal signals from getting out, and to serve as a part of the electrical circuit. A third function worth noting is the physical protection it provides the internal wire or cable. Shielding is normally specified as a cable construction detail. For example, the cable may be unshielded, contain shielded pairs, have an overall aluminum/mylar tape and drain wire or even a double shield. Shielding effectiveness is very complex to measure and depends on the data frequency within the cable and the precise shield design. A shield may be very effective in one frequency range, but a different frequency may require a completely different design. System designers often test complete cable assemblies or connected systems for shielding effectiveness.

A hole or bare spot on the insulated conductor through which the conductor can be seen.

A test to determine the ability of a cable to withstand a violent physical concussion as might occur during handling or use.

See Weft Wires.

An instrument measure of the surface hardness of an insulating or jacket material.

A load that occurs when an ungrounded conductor comes into contact with another conductor or grounded object.

See Temperature, Short-Circuit.

A method of removing scale or mill deposits by blasting with metal shot. See Descaling.

The impinging of small hard metal particles to cold work the surface of a metal. Shot peening improves the fatigue resistance of the material so treated. This is carried out in an enclosed cabinet in which the material under treatment is revolved within a stream of shot expelled from a moving nozzle by compressed air.

Non-metallic tubing that has been extruded, crosslinked and mechanically expanded. When reheated, it will return to its original diameter.

Tubing which may be reduced in size by applying heat or solvents.

A void left in cast metals as a result of solidification shrinkage and the progressive freezing of metal toward the center. See Pipe.

Protecting material with a loose covering of waterproof paper or other suitable material. Only the top and sides of the material are covered.

A device with appreciable resistance or impedance connected in parallel across other devices or apparatus to divert some of the current. Appreciable voltage exists across the shunt and appreciable current may exist in it.

A conductor joining two parts of an electric circuit to divert part of the current.

See Weft.

Designation for the International System of Units (Système International) as established by the General Conference of Weights and Measure in 1960. This is the preferred system over MKS, CGS, English and Metric systems. See ISO.

Designation for Steel Interlocked Armor.