Build a complete panel load schedule with NEC 220 demand factors. Get total connected load, demand load, and recommended service size instantly.
| Ckt | Breaker (A) | Load Type | Load (VA) | DF% |
|---|
A panel load schedule lists every circuit in an electrical panel along with its breaker size, connected load in VA or watts, and the demand factor applied. NEC 220.42 allows engineers to apply demand factors to general lighting loads in dwelling units, reducing the total design load below the full connected load.
The demand load โ not the connected load โ determines service entrance size. NEC 230.42 and 310.15 govern service conductor sizing based on calculated demand load amps.
NEC Table 220.42 applies: first 3,000 VA at 100%, the next 117,000 VA (up to 120,000 VA) at 35%, and anything over 120,000 VA at 25%. Small appliance and laundry branch circuits are calculated separately under NEC 220.52 at 100%.
A typical 200A residential panel has 20โ40 single-pole circuit positions (up to 40 in some models). NEC 210.11 requires at least two 20A small appliance branch circuits for the kitchen, plus one 20A laundry circuit, plus dedicated circuits for HVAC, water heater, dryer, and range.
Most jurisdictions require a load calculation and panel schedule for service upgrades, new construction, and major additions. The AHJ (Authority Having Jurisdiction) determines specific requirements, but NEC-compliant documentation is the standard baseline.
Connected load is the sum of all circuit VA ratings assuming everything runs simultaneously. Demand load applies NEC diversity factors reflecting real-world usage patterns. Service conductors are sized to demand load, not connected load โ this is why a 200A panel can technically serve more than 200A of connected loads.