Contact
Corrections are the most useful message this site receives. A wrong constant or a mislabelled assumption reaches every reader who lands on that page, so a report that pins down the specific number gets acted on quickly.
Reporting a wrong figure
A correction is fastest to verify when it names four things: the page URL, the values entered, the result shown, and the result expected. With those, the figure can be checked against the formula module and the verification script in one pass.
Formula disputes are welcome on the same terms. Where a published standard and this site disagree, the standard wins and the page gets corrected.
Reporting a translation issue
The calculator page is published in 18 languages, and a mistranslated label or a wrong unit name in one of them is worth reporting on the same terms as a wrong number. Name the language and the exact phrase, since that is faster to locate than a general description of where it appeared.
What this site cannot answer
Questions asking whether a specific breaker, conductor or generator suits a specific installation cannot be answered here. That judgement depends on the full load calculation, the local code edition and the site conditions, and it belongs with a licensed electrician who can inspect the installation.
Reaching us
Write to hello@kwcalculator.com. Correction reports get read first.