Learning Games
Local Spark Coach: Wire the House
Learn code basics by playing. Wire a 2D house, room by room, make the call on every device, and find out right away if you got it right. It’s fun, it works on your phone or computer, and access is a one-time $5. Friends get in free with a code.
Four buildings to wire
Start with a regular home, then work up to the tougher jobs.
- Home
- Solar + battery + EV home
- Office with a generator
- Restaurant
Get access to the game
$5 one-time access. Pay once on Gumroad’s secure checkout and you keep access for good. You never pay twice, and I never see your card details.
- Buy access. Your license key arrives in your Gumroad receipt email.
- Open the game and paste your key once. That browser remembers you.
- On a new phone or computer, paste the same key again.
Free for friends: if I gave you a friend code, enter it on the game’s first screen instead of a key.
Want to chip in a little extra?
Optional: a $5 tip helps me build more buildings and more lessons. It does not unlock anything extra.
Support William – $5 tipComing soonThank you for supporting a small Wellesley business. – William
A training aid, not a rulebook
Local Spark Coach is a training and study aid only. It does not replace the official code books, your local authority having jurisdiction, or a licensed professional. Rules can change and can differ between towns, so always check the current adopted code before you do any work.
Edition used: 2026 NEC® with Massachusetts amendments, 527 CMR 12.00. Questions point to article and section numbers, and every hint is written in my own words. Always check the current adopted code and your local inspector. Massachusetts changes the base code (527 CMR 12.00), so a few answers can differ on a real job.
Questions?
I’d love to hear from you. Send me an email and I’ll write back.