What term describes the current carrying ability of a conductor?

Ampacity is the term that specifically refers to the maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration. It is crucial in determining the appropriate conductor size for a given application to prevent overheating and ensure safety. Ampacity takes into account factors such as the conductor material, insulation type, ambient temperature, and installation conditions.

Understanding ampacity is essential in electrical design and installation, as using a conductor beyond its rated capacity can lead to hazardous conditions, including fires or equipment damage. Other related terms such as current rating generally refer to a broader specification related to the current, while resistance pertains to the opposition to current flow in a circuit. Voltage rating describes the maximum voltage that a device or conductor can handle, but it does not directly relate to the current carrying capacity.