Disclaimer

Electrical-safety disclaimer

The calculators on WattCalcs produce estimates for planning and education, based on your inputs and standard engineering values (AWG resistance, NEC ampacity, resistivity, peak sun hours, typical appliance watts).

Electrical work can be dangerous and is governed by the National Electrical Code (NEC) and your local code. Conductor and overcurrent sizing must comply with the NEC edition adopted by your jurisdiction, including all temperature, bundling and termination-rating derating. Verify all sizing with a licensed electrician and your authority having jurisdiction (AHJ). These tools are not a substitute for professional design, a structural/load study or local code compliance.

Values reference NEC 310.16 / Chapter 9 (ed. 2020/2023). We make no warranty as to fitness for any particular purpose and accept no liability for decisions made on the basis of these estimates.