Editorial Policy

How content is produced

Every page is written for one job: answer a specific conversion question completely, with the formula shown, at least one worked example computed in the open, and the limits of the answer stated. Pages are not published until they meet that standard on their own — there are no placeholder or thin pages on this site. AI tools are used as drafting and coding assistance; every formula and figure is verified by a human against the cited sources before publication, as described in the note on AI on the About page.

How formulas are verified

Calculations rest on the identities and publications listed on the methodology page: the apparent-power identities themselves, IEEE and IEC standards for the conventions around them, and the National Electrical Code for protection context. Before any update ships, the calculation code is run against a fixed set of reference cases with known-correct answers (for example, 100 kVA at 400 V three-phase = 144.34 A) and must reproduce them exactly. Chart values are generated by the same code as the calculators, never typed separately, so the two cannot diverge.

Corrections

Anyone can report an error via the Report an Error page or by email. Every report is checked against the sources, not against the reporter's confidence or this site's existing text. Confirmed errors are fixed in the site's next update, and the correction is what ships — silently wrong figures are never left in place once confirmed. Where a correction changes a figure someone may have relied on, the affected page notes the change.

Sourcing standard

Claims that carry numbers carry sources. Tool pages cite the standards their own figures rest on; the methodology page carries the full list. Sources are linked by name to the publisher's own page — never to a secondary summary where the primary document is available.

Review cadence

Pages are reviewed when the underlying standards change, when a correction is confirmed, and in a periodic pass over the whole site. The "Checked" date in each page's byline records the last review of that page.