Residential load calculator (NEC 220.82)
load_calculatorRead-onlyIdempotent
Dwelling service load by the NEC 220.82 optional method: 3 VA/ft² lighting, small-appliance and laundry circuits, fixed appliances, demand factor, heating or cooling, and the minimum standard service size. Leave an appliance out to count it as 0 VA.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| ev | No | EV charger (VA). Optional. | |
| hvac | No | Largest of heating or cooling (VA). Optional. | |
| sqft | Yes | Living area (ft²). | |
| dryer | No | Dryer (VA). Optional. | |
| other | No | Other fixed appliances (VA). Optional. | |
| range | No | Range / cooktop (VA). Optional. | |
| small | Yes | Small-appliance circuits. | |
| heater | No | Water heater (VA). Optional. | |
| laundry | Yes | Laundry circuit. "1" = Yes (1,500 VA); "0" = No. | 1 |
| disposal | No | Disposal (VA). Optional. | |
| dishwasher | No | Dishwasher (VA). Optional. |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| ok | Yes | ||
| url | Yes | ||
| code | Yes | ||
| rows | Yes | ||
| table | No | ||
| inputs | Yes | ||
| summary | Yes |