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Lighting Circuit Calculator NEC 220.12 · 210.11
Enter square footage to find minimum general lighting circuits for a dwelling unit.
Total habitable area per NEC 220.12 — measured from outside dimensions, excluding open porches, garages, and unfinished spaces.
By clicking Apply, you acknowledge that results are for reference only and must be verified by a qualified electrician.
Remember
These are general lighting circuits only. NEC 210.11(C) requires additional dedicated circuits: 2 small-appliance (kitchen/dining), 1 laundry, and 1 bathroom. Those are on top of what this tool calculates.
These are general lighting circuits only. NEC 210.11(C) requires additional dedicated circuits: 2 small-appliance (kitchen/dining), 1 laundry, and 1 bathroom. Those are on top of what this tool calculates.
For reference only. Verify all results with the current NEC and local amendments. See Terms of Use.