For circuits with conductors rated at 75°C, the termination provisions of equipment must be used for conductors up to which size?

For circuits with conductors rated at 75°C, the termination provisions of equipment must be used for conductors up to which size?

• A. 1 AWG
• B. 2 AWG
• C. 3 AWG
• D. 4 AWG

Answer: (A)

When you land a conductor on a termination, the lug or clamp in the equipment is rated for a certain maximum conductor size. If the conductor insulation is rated at 75°C, you may use the equipment’s 75°C termination provisions only up to a conductor size of 1 AWG. That means 1 AWG is the largest conductor that can be terminated with those 75°C terminations; conductors larger than that require terminations rated for the larger size (or other equipment with appropriate 60°C/75°C ratings). So the maximum size is 1 AWG.

When you land a conductor on a termination, the lug or clamp in the equipment is rated for a certain maximum conductor size. If the conductor insulation is rated at 75°C, you may use the equipment’s 75°C termination provisions only up to a conductor size of 1 AWG. That means 1 AWG is the largest conductor that can be terminated with those 75°C terminations; conductors larger than that require terminations rated for the larger size (or other equipment with appropriate 60°C/75°C ratings). So the maximum size is 1 AWG.