1. Plural of ampacity; the maximum electric current that a conductor or device can safely carry without overheating.
Usage: Technical term used in electrical engineering and building codes; Always used in plural form when referring to multiple conductors or ratings

Examples

• The electrician checked the ampacities of the copper wires before installing the circuit.
• Different wire gauges have different ampacities depending on the insulation type.
• The National Electrical Code specifies ampacities for various conductor sizes.
• We need to verify the ampacities of all cables in the panel to ensure safety compliance.
• The ampacities listed on the equipment label must not be exceeded during operation.