Estimate electrical demand load from connected load, demand factor, voltage, phase type, continuous load factor, and panel or service capacity. This calculator helps estimate demand watts, demand amps, kVA, remaining capacity, and service load percentage.
Connected load:
The calculator starts with total connected watts or detailed load inputs.
Demand factor:
A demand factor is applied to estimate how much of the connected load is expected to operate at the same time.
Capacity comparison:
Demand amps are compared to the selected panel or service rating to estimate remaining capacity and load percentage.
A demand load calculator helps estimate how much electrical load a service, panel, subpanel, building, garage, shop, or equipment group may actually require.
It can help with panel planning, service upgrade planning, EV charger planning, subpanel planning, appliance additions, HVAC upgrades, and general electrical load estimates.
Your result shows demand watts, demand kW, demand amps, connected load, demand factor, continuous load factor, kVA, capacity load percentage, remaining amps, remaining watts, and recommended service size estimate.
Demand load is the estimated electrical load expected to operate at one time after applying demand factors to the total connected load.
No. Connected load is the total installed load. Demand load estimates how much of that load is expected to be used at the same time.
Multiply connected load by the demand factor. If the load is continuous, an additional continuous load factor may also be applied.
No. This is a simplified planning tool. Final demand load and service sizing depends on electrical code, utility requirements, equipment nameplates, permits, conductor sizing, and inspection rules.