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📚 Guides
Plain-English answers to the wiring questions everyone asks — with verified numbers, the math shown, and a calculator one click away.
How these guides are made
Every number here comes from the same verified data tables that power our calculators — cross-checked against verbatim reproductions of the published code text before anything ships, and sealed so they can't change silently. Where our answers differ from another site's, we show the math so you can check both. These guides are planning references, not a substitute for a licensed electrician or your local code.
