Another way to calculate the minimum number of general lighting circuits required in a dwelling unit is to divide the total habitable square foot living area by ____________ square feet for 15 amp branch circuits and ______________ square feet for 20 amp branch circuits.

Question

Quizplus · Accepted Answer

According to the National Electrical Code, each 15 amp branch circuit can handle a maximum of 600 square feet of living space and each 20 amp branch circuit can handle a maximum of 800 square feet of living space. Therefore, dividing the total habitable square foot living area by these values will give the minimum number of general lighting circuits required. The closest option to these values is B, which has 600/800 square feet for 15 amp/20 amp circuits.

Another Way to Calculate the Minimum Number of General Lighting