Electrical Load Calculator & Schedule

Build an auditable service, dwelling or branch-circuit load schedule with explicit demand, duty, reserve and phase assumptions.

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What Is the Electrical Load Calculator & Schedule?

The Electrical Load Calculator builds a local worksheet for connected apparent power, real power and planning demand. It supports DC, single-phase, split-phase and balanced three-phase systems; editable load rows; continuous-load treatment; noncoincident groups; reserve; split-phase leg allocation; and separate 2023 or 2026 dwelling reference assumptions.

How It Works

Choose the worksheet type and electrical system, confirm the voltage basis, then enter each load from nameplate VA, watts or amperes. Review every power factor, demand factor, duty classification and noncoincident group. The result separates connected, demand and planned load and can be copied or exported with its assumptions.

When to Use It

Use it to organize early project information, compare load scenarios and prepare a worksheet for qualified review. It does not select a service, feeder, conductor, breaker, disconnect, grounding method or code-compliant installation.

Frequently Asked Questions

Is This A Code-Compliance Calculator?: No. It is a planning worksheet with editable assumptions. The adopted code edition, local amendments, utility rules, nameplates and authority having jurisdiction control the actual design.
Why Are VA And Watts Separate?: Apparent power in volt-amperes determines current for AC load planning, while watts represent real power. Power factor connects the two values.
What Does A Noncoincident Group Do?: It models loads that cannot operate at the same time by retaining only a safely comparable maximum within the named group. Mixed split-phase connection types must be reviewed rather than silently combined.

Found an issue? Send Feedback. See our data sources and update policy for tools that depend on changing information.

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Electrical Planning Desk

Load Schedule

Project Name

Values remain in this browser tab and calculations update locally.

Calculation Basis

Use nameplate apparent power where available. Every demand, continuous-load and reserve assumption stays visible and editable.

Electrical SystemVoltage PresetLine-To-Line VoltageLine-To-Neutral VoltageContinuous Planning FactorPlanning ReserveEntered Capacity Comparison

Three-phase calculations use line-to-line voltage. Split-phase line-to-line voltage must be approximately twice line-to-neutral voltage, and balanced aggregate amp entries mean per-line current. Entered capacity is an arithmetic comparison only.

Nameplate Load Schedule

Use VA when available. Watts use the entered power factor; amps use the selected system voltage and phase basis.

Load 1

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Load 2

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Load 3

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Load 4

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Load 5

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Load 6

DescriptionCategoryInput ValueInput UnitQuantityPower FactorDemand FactorLoad DutyNoncoincident GroupSplit-Phase Connection

Rows with the same noncoincident group contribute only the largest adjusted load in that group. Split-phase groups must use one connection type. Use a group only when a qualified design confirms the loads cannot operate together.

Load Path

Connected nameplates, applied assumptions and final planning basis remain separate.

Connected0 VAAll entered loads

Coincident Demand0 VA0% of connected

Planned Basis0 VA0% reserve

Category	Connected	Demand	Planned
HVAC	0 VA	0 VA	0 VA
Lighting	0 VA	0 VA	0 VA
Motors	0 VA	0 VA	0 VA
Process Equipment	0 VA	0 VA	0 VA
Receptacles	0 VA	0 VA	0 VA

Electrical Readout

Current follows apparent power, voltage and the selected phase basis.

Maximum Planned Line Current0 A

Planned Apparent Load0 VA

Planned Real Power0 W

Continuous Adjustment0 VA

Noncoincident Load Excluded0 VA

Line A0 A

Line B0 A

Estimated Neutral From Entered Allocation0 A

Entered Phase Imbalance0%

Worksheet Notes

- Enter at least one nameplate load to produce a project estimate.
- No planning reserve is included.

DISCLAIMER:

This worksheet is a planning aid, not an electrical design or code-compliance determination. Verify the adopted NEC edition, local amendments, utility rules, nameplates, demand factors, continuous-load treatment, noncoincident loads, phases and field conditions with the authority having jurisdiction and a qualified electrical professional. It does not select or approve service ratings, conductors, feeders, breakers, overcurrent protection, disconnects, grounding, fault current or equipment.