Panel Schedule Builder
Create professional panel schedules and demand load calculations for permit applications. Add circuits, apply demand factors, and size the service entrance.
| # | Description | Breaker (A) | Poles | Load (VA) | Demand Factor | Circuit Type |
|---|
How to Build a Panel Schedule
Create professional electrical panel schedules in three steps.
Enter Panel Details
Type in the panel name, voltage, number of phases, and select a standard service size. These parameters set the basis for all load calculations.
Add Circuits
Add rows for each circuit with description, breaker amps, poles, load VA, demand factor, and circuit type. Use the add and remove buttons to build your schedule.
Review Load Summary & Export
See total connected load, demand load, minimum service ampacity, and panel capacity with a color indicator. Export to CSV or print for permit submission.
Frequently Asked Questions
Common questions about panel schedules and load calculations.
Sum all connected loads in VA, then apply demand factors per NEC: lighting continuous at 125%, heating at 100%, A/C at 100% plus largest motor at 125%, general receptacles at 180VA per outlet with demand factors. This calculator handles all the math.
Minimum service ampacity = total demand load in VA divided by the service voltage (240V for single-phase residential). The result must be less than or equal to the selected standard service size (100, 125, 150, 200, 225, 320, or 400A).
Lighting continuous: 125%. Heating: 100%. A/C: 100% of largest motor plus 125% for the largest motor. General receptacles: 180VA each with a demand factor of 100% for first 10 kVA and 50% for remainder. Appliances: nameplate rating with applicable demand factors.