What term describes the maximum voltage and amperage a wiring device can withstand?

The term that describes the maximum voltage and amperage a wiring device can withstand is commonly referred to as the "service rating." This designation indicates the overall capability of a device or component to operate safely under specified electrical conditions. In practical terms, service rating encompasses not only the voltage levels the device can handle but also the current (amperage) it can support without suffering damage or failing. This is essential for ensuring safe and reliable operation, preventing overheating or electrical hazards.

While other terms may appear related, such as "load rating" or "capacity rating," they often focus on more specific aspects of performance or usage. "Voltage rating," for instance, pertains solely to the maximum voltage a device can handle, without incorporating the current aspect. Therefore, "service rating" is the most comprehensive term that encapsulates both voltage and amperage limits for a wiring device.