This calculator uses the NEC Article 220 Standard Method to estimate your residential electrical panel demand.
Reviewed by a licensed electrician
Find answers to common questions
This calculator is provided as a free educational tool to assist with preliminary planning and estimation. While we strive for accuracy, results are estimates based on standard formulas and assumptions. Actual requirements may vary based on local codes, site conditions, manufacturer specifications, and other factors.
Professional Consultation Required: This tool does not replace professional assessment, engineering calculations, or licensed contractor evaluations. Always consult with qualified professionals for code-compliant installations, safety-critical applications, and final project specifications. Home Team Electric and its affiliates assume no liability for decisions made based solely on calculator results.
Local Requirements: Building codes, permit requirements, and safety standards vary by location. Verify all calculations against local regulations and obtain necessary permits before beginning work. When in doubt, contact Home Team Electricfor a professional consultation and accurate project assessment.
Check the main breaker at the top of your panel.
Approximate conditioned living area.