Loads & Services
Service & Load Calculations
Estimate dwelling and commercial loads and review service capacity.
Not sure where to start? Choose by task and required inputs.
Commercial Feeder and Service Load CalculatorEstimate non-dwelling load and review a separate conductor-sizing basis.Multifamily Dwelling Load CalculatorEstimate connected and diversified load for repeated dwelling units.Household Range Demand CalculatorEstimate cooking appliance demand from count and nameplate rating.Household Dryer Demand CalculatorEstimate clothes dryer demand from count and nameplate rating.Fixed Appliance Demand CalculatorEstimate demand for qualifying fixed appliances.Heating and Cooling Noncoincident Load CalculatorSelect the larger heating or cooling load when systems cannot operate together.Commercial Kitchen Equipment Demand CalculatorEstimate diversified demand from connected commercial kitchen equipment.Commercial Receptacle Load CalculatorEstimate connected and demanded load from commercial receptacle yokes.Commercial Lighting Load CalculatorCalculate connected and continuous sizing load from area and unit load.Panel Phase Load Balance CalculatorCompare phase loads and quantify maximum imbalance from average.Continuous Load Circuit Capacity CalculatorApply continuous-load sizing treatment and calculate required current.Dwelling Load CalculatorCalculate one-family service load using standard or optional methods.Existing Service Capacity CalculatorCheck proposed loads against an existing dwelling service.
Which tool fits your task?
Choose the occupancy and calculation task before entering loads. A new load calculation and an existing-service added-load screen have different starting information.
| Your task | Inputs to collect | Tool and scope |
|---|---|---|
| Calculate a one-family dwelling service load | Dwelling loads and the inputs required by the supported standard/optional method. | Dwelling Load Calculator Use the stated method and occupancy scope. |
| Estimate a non-dwelling feeder or service load | Commercial load groups and the supported demand assumptions. | Commercial Feeder and Service Load Calculator The load result and conductor-sizing basis are reviewed separately. |
| Review proposed additions to an existing service | Existing dwelling service data and the selected added-load categories. | Existing Service Capacity Calculator The existing-service worksheet does not replace every required load study. |
| Review one EVSE circuit and its added service load | Charger current, circuit inputs and existing-service context. | EVSE Circuit and Service Load Planner Connector compatibility and load-management approval are separate questions. |