ampacity

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about ampacity at Wordnik → Where our words come from →

1. The root mean square of the electrical current which a device (usually a wire) can carry within a specific environment (including temperature rating, power loss, heat dissipation, etc.) It is measured in amperes (amps) and is most often used to rate electrical wires and cables.