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ANSI - The American National Standards Institute

Anti-Oxidant - A substance which prevents or slows down oxygen decomposition (oxidation) or a material exposed to air.

Anti Ozonant - A substance which prevents or slows down material degeneration due to ozone reaction.

Arc - 1.) A Luminous glow formed by the flow of electric current through ionized air, gas or vapor between separated electrodes or contacts. 2) A portion of the circumference of a circle.

Arc Over Voltage - The minimum voltage required to create an arc between electrodes separated by gas or liquid insulation under specified conditions.

Area of conductor - The size of a conductor cross-section, measured in circular mils square inches, etc.

Armor - A braid or wrapping of metal, usually steel, used for mechanical protection. Generally placed over the other sheath.

ASA - The American Standards Association. Former names of ANSI.

ASME - The American Society of Mechanical Engineers.

ASP - Aluminum Steel Polyethylene. Provides mechanical and electrical protection.