Electrical Panel Load Calc

Calculate electrical panel loads instantly with NEC 80 percent rule checks — built for electricians and engineers.

Filling out a panel schedule and need to check if total connected load passes the NEC 80% continuous load rule? Add your circuits, see kW totals, and get an instant pass/fail status — before the inspector shows up.

Add circuits with name, voltage, phase, and amperage. The app calculates each circuit's kW load, tracks total connected load, and checks NEC Article 220 demand factors and the 80% continuous load rule against your panel rating.

WHAT IT CALCULATES:

• Total connected load in kW and VA
• NEC demand load per Article 220
• Panel utilization percentage with color-coded status
• Maximum continuous load based on panel ampere rating
• Clear PASS or FAIL status for the 80% rule

VOLTAGE CONFIGURATIONS:

• 120V, 208V, 240V, 277V, 480V
• Single phase and three phase

KEY FEATURES:

• NEC Article 220 branch-circuit load calculations
• NEC 210.20 continuous load 80% rule check
• Standard breaker sizes: 15A through 200A
• Panel ratings from 100A to 400A
• kW and VA totals per circuit and panel
• Works completely offline

Built for licensed electricians, electrical engineers, and building inspectors.