Terms of Use

Using voltagedropcalculator.co means accepting the terms below. They are short because the site is simple: static pages and calculators that run in your browser, with no accounts, no submitted content and nothing for sale.

You may use the calculators and reference pages freely, for personal or commercial work, including printing a result or quoting a figure in a job file or a submittal. No permission or attribution is required to use a number the site produced for your own project.

You may not republish the site's pages, charts or tables wholesale as your own content, scrape the site systematically, or present its output as an independent verification of your work. Reproducing a chart in full on another site is republication, not use; linking to the page is always fine and does not need asking.

Nothing here may be used in a way that interferes with the site working for other people — automated request floods, attempts to circumvent the host's protections, or anything that would breach the law in your jurisdiction.

The site is provided as is. Conductor figures are transcribed from published National Electrical Code tables and the formulas are shown on the pages that use them, but no warranty is given that every figure is free of transcription error, that the edition followed matches the one your jurisdiction enforces, or that a result fits the particular installation you have in front of you.

Results are for planning. They do not account for the condition of an existing installation, local amendments, equipment ratings, or anything an inspection would reveal. The disclaimer sets out the electrical safety limits in full and forms part of these terms.

To the extent the law allows, the site's operator is not liable for loss or damage arising from use of the site or reliance on anything published here, including work carried out on the basis of a result the site produced. You are responsible for verifying any figure against the code edition in force where you are, and for having work carried out and inspected by people qualified to do it.

Nothing in these terms limits liability where the law does not permit it to be limited.

Where a page links to another site — the National Fire Protection Association, for the code itself — that site is outside this one's control, and linking to it is not an endorsement of anything else it publishes.

These terms may change as the site does; the date below records when they were last revised. Continuing to use the site after a change means accepting the revised terms. Questions about them go to contact@voltagedropcalculator.co.

Last updated: September 2026