Final answer:
The standard ampacity for a 2-AWG copper wire with RHH insulation is around 115 amps at 30°C, but at an ambient temperature of 32°C, the value must be derated. An exact figure requires consulting the National Electrical Code or a reliable engineering reference.
Step-by-step explanation:
The maximum ampacity for a 2-AWG RHH conductor depends on various factors including insulation type, installation conditions, and ambient temperature. Assuming an ambient temperature of 30°C, the standard ampacity for 2-AWG copper wire with RHH insulation, according to NE Code 310-15, would be around 115 amps. However, for an environment with an ambient temperature of 32°C, which is higher than the standard reference, the ampacity must be derated. Derating is a decrease in the current-carrying capacity of the wire to account for higher temperatures.
Unfortunately, without the specific derating factors or the exact tables from the National Electrical Code, providing an exact figure for the maximum ampacity at 32°C is not possible within the constraints of this format. Therefore, I would advise consulting the latest version of the National Electrical Code or an electrical engineering reference to find the exact derated ampacity for a 2-AWG RHH conductor at an ambient temperature of 32°C.