What is the maximum load for a 20-amp circuit operating at 80% capacity?

What is the maximum load for a 20-amp circuit operating at 80% capacity?

• A. 12 amps
• B. 14 amps
• C. 16 amps
• D. 18 amps

Answer: (C)

To determine the maximum load for a 20-amp circuit operating at 80% capacity, you start by calculating 80% of the full circuit rating. First, you take the full capacity of the circuit, which is 20 amps, and multiply it by 0.80 (representing the 80% capacity guideline). 20 amps x 0.80 = 16 amps. This calculation aligns with the National Electrical Code (NEC), which stipulates that circuits should not be loaded to more than 80% of their maximum rating for continuous loads to ensure safety and prevent overheating. Thus, the maximum load permissible on a 20-amp circuit operating at 80% capacity is indeed 16 amps. This ensures that the circuit can safely handle the load without risking potential hazards such as tripping breakers or electrical fires due to overheating.

To determine the maximum load for a 20-amp circuit operating at 80% capacity, you start by calculating 80% of the full circuit rating.

First, you take the full capacity of the circuit, which is 20 amps, and multiply it by 0.80 (representing the 80% capacity guideline).

20 amps x 0.80 = 16 amps.

This calculation aligns with the National Electrical Code (NEC), which stipulates that circuits should not be loaded to more than 80% of their maximum rating for continuous loads to ensure safety and prevent overheating.

Thus, the maximum load permissible on a 20-amp circuit operating at 80% capacity is indeed 16 amps. This ensures that the circuit can safely handle the load without risking potential hazards such as tripping breakers or electrical fires due to overheating.