Disclaimer

Last updated: October 28, 2026

Reference only

PanelLoad calculators and tables are provided for reference. Results depend on the inputs and assumptions shown with them, and may be wrong for your installation.

Verify against the adopted code

Always verify results against the code edition your jurisdiction has adopted. The authority having jurisdiction (AHJ) decides what is required, and local amendments can differ from the NEC text we reference.

Not a substitute for a professional

These tools are no substitute for a licensed electrician, an engineer or an inspector. Do not use them as the only basis for a safety-related decision.

Trademark

NEC and National Electrical Code are registered trademarks of the National Fire Protection Association (NFPA). PanelLoad is not affiliated with, endorsed by or sponsored by NFPA.