Which rule of thumb can be followed when planning branch circuits for dwelling units?
A) one 20-ampere lighting circuit for every 200 square feet
B) one 15-ampere lighting circuit for every 1000 square feet
C) load circuits to no more than 50% of their rating
D) load circuits to no more than 80% of their rating

Question

Quizplus · Accepted Answer

The National Electrical Code recommends load circuits to no more than 80% of their rating for branch circuits in dwelling units. This allows for some flexibility in the circuit's capacity and ensures that the circuit doesn't become overloaded. Rules A and B relate to lighting circuits, but do not provide guidelines for other circuits such as receptacles and appliances. Rule C is a general guideline for electrical circuits but does not specifically address branch circuits in dwelling units.

Which Rule of Thumb Can Be Followed When Planning Branch