Number of Branch Circuits (Nbc):

\[ Nbc = \frac{Af}{500} \]

or

\[ Nbc = \frac{NOgp}{10} \]

Where:

• \(Nbc\) is the number of branch circuits.
• \(Af\) is the floor area in square feet (ft²).
• \(NOgp\) is the number of general outlets.