What is the amperage rating for #2 copper wire?

The amperage rating for #2 copper wire is typically around 206 amps when using a 75°C (167°F) insulation temperature rating under standard conditions. This rating is based on the American Wire Gauge (AWG) standards, which provide guidelines on the maximum current that can safely flow through different sizes of wire. The 206 amp rating reflects the ability of #2 copper wire to conduct electricity effectively while minimizing the risk of overheating and maintaining safety in electrical systems.

It's important to note that the ampacity can vary based on factors such as ambient temperature, installation conditions (e.g., whether the wire is in a conduit or exposed air), and whether the wire is used for a specific application like continuous or intermittent loads. Thus, while 206 amps is the standard for typical conditions, one must always consider these varying factors when determining the appropriate wire for a particular installation.