Disclaimer
Last updated: 2026-09-07
Informational use only
The information and tools on this site provide a homeowner planning recommendation. They are not electrical engineering, an installation design, manufacturer approval, code-compliance approval, or a substitute for advice from the appropriate qualified professionals.
Final equipment and installation decisions
Before purchasing or installing equipment, have the final generator selection, transfer equipment, wiring, fuel supply, permits, manufacturer requirements, and local-code or AHJ requirements confirmed by the qualified professionals responsible for the work.
Scope
This site and its calculator are intended for residential optional standby systems under NEC Article 702. They are not designed to size emergency systems (Article 700), legally required standby (Article 701), or critical operations power (Article 708).
No warranties
The site is provided “as is” and “as available,” without warranties of any kind, express or implied, including accuracy, fitness for a particular purpose, or non-infringement.
Limitation of liability
To the fullest extent permitted by law, SizeMyGenerator.com and its contributors will not be liable for any losses or damages arising from reliance on the information or tools provided here.
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