NEC Commercial Electrical Practice Test

Which ampacity is required for termination provisions of equipment rated at 100 amperes or less?

1. 80*C

2. 60*C

3. 40*C

4. 100*C

The correct answer is: 60*C

The correct ampacity for termination provisions of equipment rated at 100 amperes or less must adhere to the guidelines set forth in the National Electrical Code (NEC). For equipment rated at 100 amperes or less, the NEC specifies that conductors must be rated for 60°C (140°F) minimum for termination provisions. This is primarily to ensure safe and effective operation under various load conditions. Using 60°C rated conductors ensures that the wire insulation can adequately handle the potential heating that occurs during operation while providing a level of safety and durability. The standards help prevent overheating and potential failures at termination points, which is critical to maintaining system reliability and preventing fire hazards. Higher temperature ratings (like 80°C or 100°C) apply to larger equipment or specific installations, but for general termination of equipment specifically rated at 100 amperes or less, the 60°C rating is sufficient and compliant.