Terms of use

Last updated 2026-11-10.

Reference only

Results are calculated from published tables and formulas and are provided as a design aid. They are not engineering advice, a code interpretation or approval of any installation. Electrical work can cause fire, injury and death; it must comply with the code adopted where you live and may require a permit and a licensed electrician.

No warranty

We work to keep the numbers correct but provide the site as is, without warranty of any kind. To the extent the law allows, CircuitGauge is not liable for losses arising from use of the site.

Use of content

You may link to any page and quote individual values with a link back. Copying the site's tables or calculators in bulk is not permitted.

Changes

We may update these terms; the date above shows the latest version.