What is the ampacity of each conductor in a 3-conductor armored cable assembly using 10 AWG insulated copper conductors with 75°C insulation?

The ampacity of a conductor is determined by the size of the conductor and the type of insulation used, considering the temperature rating as well. In this case, the 10 AWG insulated copper conductors with 75°C insulation allows for a specific ampacity that can be referenced in standard electrical code tables.

According to the National Electrical Code (NEC), a 10 AWG copper conductor has an ampacity of 30 amps when rated at 60°C. However, with a 75°C rating, the allowable ampacity increases. For conductors with 75°C insulation, the ampacity typically goes up to 35 amps.

It's important to note that the specific installation conditions, such as bundling of multiple conductors or ambient temperature, may further impact the ampacity, but in the absence of those considerations, the appropriate value for isolated conductors with 75°C insulation is recognized as 35 amps. Thus, this leads to the conclusion that the correct answer indicating the ampacity of each conductor in a properly grouped scenario is indeed 35 amps.