Wrong answer keys are the most common complaint about exam prep material. This page is how we answer it: every correction we make to a problem or a page is listed here, with its date.
Report an error
Each problem has a report link in its review. You can also write to supportlap478@gmail.com with the page and the problem. We check every report against the 2026 NEC, answer you, and if you are right we fix it and list it below.
Log
No corrections so far. Last reviewed 2026-11-12.