Lighting Load Calculations

[Smart $]

I believe you are referring to 210.11(B)...

Actually, I was referring to 210.11(A)... but 210.11(B) can be interpreted as applying to 220.14(K) Banks and Office Buildings receptacles because the calculated load minimum is based on 1 VA/ft².

 

[JFletcher]

When laying out lighting circuits, how do you guys figure fixture totals when using LED's? For example, a standard 6" recessed can is usually rated for a 75W flood. For a 15 amp circuit, that would be roughly 23 cans per circuit. Now if LED's are used in place of the 75W floods ( 11W each in this case ) in the initial installation, can the circuit be designed with a greater number of cans to reflect the much lower LED power consumption?

They make LED trims that snap right into the ceiling, no can needed - - new work ones do have a plate that mounts to the joists for the layout.

I cant think of any residential and few commercial applications where I would need or want to put more than 23 can lights on one circuit.