Device Count Calculator
Estimate receptacles, switches, lights, and dedicated circuits per room based on NEC minimums and common practice.
| Room | Qty | Recepts | Switches | GFCI | Lights | Dedicated |
|---|---|---|---|---|---|---|
| Bedroom | 3 | 12 | 3 | 0 | 6 | 0 |
| Bathroom | 2 | 0 | 2 | 2 | 4 | 2 |
| Kitchen | 1 | 2 | 2 | 2 | 3 | 2 |
| Living Room | 1 | 6 | 2 | 0 | 3 | 0 |
| Garage | 1 | 0 | 1 | 3 | 2 | 1 |
| Totals | 20 | 10 | 7 | 18 | 5 | |
| Total Devicesexcludes dedicated circuits | 55 | |||||
How device counts are estimated
This calculator uses NEC minimum requirements combined with common residential practice to estimate device counts per room type. The actual number of devices for any project depends on the floor plan, customer preferences, and local code amendments.
Room-by-room breakdown
Kitchens require at least two 20A small-appliance branch circuits with GFCI protection, plus dedicated circuits for the dishwasher, disposal, and other fixed appliances. Bathrooms need at least one GFCI receptacle and a dedicated 20A circuit. Bedrooms typically get 4 receptacles per NEC spacing rules (no point along the wall more than 6 feet from an outlet).
Dedicated circuits
Dedicated circuits are required for high-draw appliances: washers, dryers, ranges, HVAC equipment, and garage door openers. This calculator lists common dedicated circuits per room type in their own column so you can size the panel, but they are counted separately from the device total — a home run is a circuit, not a device.
Devices counted. Ready to estimate?
Faraday turns a device count into a priced estimate with materials, labor hours, and markup in minutes.
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