jar546
Forum Coordinator
As an electrical inspector, you are reviewing the electrical plans of a new commercial building. During your inspection, you notice a branch circuit designed to supply a combination of continuous and noncontinuous loads. According to the plans, the continuous load on this circuit is 20 amps, and the noncontinuous load is 10 amps. Your job is to ensure that the overcurrent protective device for this circuit is correctly sized according to NEC 210.20(A).
Question for the Electrical Inspector: Based on NEC 210.20(A), which of the following actions would you take regarding the sizing of the overcurrent protection device for this branch circuit?
A. Approve a 30-amp overcurrent protection device, as it matches the sum of continuous and noncontinuous loads.
B. Suggest a 35-amp overcurrent protection device, since it provides a margin above the combined load.
C. Require a minimum 35-amp overcurrent protection device, calculated as the noncontinuous load (10 amps) plus 125 percent of the continuous load (20 amps x 125% = 25 amps; 10 amps + 25 amps = 35 amps).
D. Recommend a 40-amp overcurrent protection device to ensure ample capacity for potential load increases.
Question for the Electrical Inspector: Based on NEC 210.20(A), which of the following actions would you take regarding the sizing of the overcurrent protection device for this branch circuit?
A. Approve a 30-amp overcurrent protection device, as it matches the sum of continuous and noncontinuous loads.
B. Suggest a 35-amp overcurrent protection device, since it provides a margin above the combined load.
C. Require a minimum 35-amp overcurrent protection device, calculated as the noncontinuous load (10 amps) plus 125 percent of the continuous load (20 amps x 125% = 25 amps; 10 amps + 25 amps = 35 amps).
D. Recommend a 40-amp overcurrent protection device to ensure ample capacity for potential load increases.