The Astral education hub
The electrical academy, from the ground up
AstralLearn is where a licensed C-10 explains how it really works: free guides and tools, a hands-on course academy, and the National Electrical Code explained in Spanish.
The program · one enrollment
The AstralLearn Academy
The complete path — from what electricity is to passing your exams. One structured program of many modules, with the right calculator in each lesson, practice questions, and a line to a licensed C-10. Aimed at the journeyman, then the contractor (C-10) exam.
One-time payment · lifetime access · specialized courses sold separately
42% complete · 5/12 lessons
Free to learn
Guides & ebooks
Straight answers on the decisions homeowners actually face — plus short, plain-English ebooks you can read online or download.
Is Your Electrical Panel Safe? 8 Warning Signs to Know
Obsolete brands, breakers that trip, a warm panel, aluminum wiring — the real warning signs your panel is a risk, and the fast way to know for sure.
Sep 7, 2026 · 6 min read Read →Panel & serviceHow Much Does a 200-Amp Panel Upgrade Cost in California? (2026)
Panel swap or full service upgrade? What drives the price, PG&E's role, permits, and how to know if you really need 200 amps.
Sep 3, 2026 · 6 min read Read →Solar & batteryIs Solar Still Worth It in California Under NEM 3.0? (2026)
NEM 3.0 slashed export credits ~75%. Here's why a battery is now essential — and how solar still saves you real money in 2026.
Sep 3, 2026 · 7 min read Read →EV chargingDo You Need a Panel Upgrade to Install an EV Charger?
Most homes can add a Level 2 charger without a new panel — but not all. Here's how to tell, and what it takes to do it right.
Sep 3, 2026 · 5 min read Read →CostHow Much Does It Cost to Install a Home EV Charger in California?
The charger is the cheap part — the price is mostly the wire run and your panel. Here's what a permitted Level 2 install really costs, and how to estimate yours.
Sep 9, 2026 · 6 min read Read →CostHow Much Does a Tesla Powerwall Cost in California? (2026)
What one (or two) Powerwalls really cost installed in 2026, what drives the number, and the honest incentive picture after the federal solar credit ended.
Sep 9, 2026 · 6 min read Read →CostGenerator vs. Battery Backup: Cost and Which Is Right for You
Generator or battery? An honest side-by-side on cost, runtime, noise and incentives — plus how to size whichever one fits your home.
Sep 9, 2026 · 7 min read Read →CostHow Much Does It Cost to Rewire a House in California?
Why rewire pricing swings so much, what knob-and-tube and aluminum wiring mean for it, and the honest range for a whole-house rewire in our area.
Sep 9, 2026 · 6 min read Read →Free ebooks
Electrical Basics: Understand Your Home's Power
Volts, amps, wires, breakers and grounding — what they are, why they matter, and when to call a pro. No jargon, from a licensed C-10 electrician.
Your Panel & Service: How the power gets into your home
The service entrance, the panel, how many circuits you need, and when an old panel has to go — explained by a licensed C-10, so you can plan with confidence.
Getting Electrification-Ready: EV, solar, battery & heat pumps without surprises
Going electric — a car, solar, a battery, a heat pump — is the biggest change to your home's power in decades. Here's how to do it in the right order, from a licensed C-10.
Free tools & references
Calculators for the field
Conduit fill, voltage drop, box fill, bending, Ohm's law and a wire-color reference — free, no sign-up.
Books & courses
Go deeper
«Por qué el código dice lo que dice»
The National Electrical Code, explained in Spanish — for electricians, apprentices and contractors in the US. Not another rulebook to memorize: the logic behind the NEC, by our founder Pablo Mendoza, a licensed C-10 electrician and lawyer.
- 21 chapters
- 60 worked examples
- 198 review questions
- 116-term ES–EN glossary
Specialized courses
À la carte · sold separatelyStandalone deep-dives on a single skill, each with its own calculators built in — bought individually, not part of the Academy program. Join a waitlist; we build the most-wanted ones first.
Reading Electrical Blueprints
Symbols, panel schedules, single-lines and how to do a real takeoff from a plan set.
Electrical Math
Load calculations (NEC 220), ampacity & derating, conduit fill and sizing — the math that makes it pass.
Home Solar & Battery Design
Size solar + storage, design around NEM 3.0, and get the NEC 705 interconnection right.
EV Charger Installation
Load calc, the 240V dedicated circuit, code (NEC 625) and a clean, permitted install.
NEC Foundations — the why
Understand why the code asks for what it asks — the logic behind the NEC, straight from the book.
Free trainings
FreeHands-on sessions on panels, EV, solar and code basics — free, for homeowners and the trade.
AstralLearn certification
Coming soonA credential that shows you understand the why behind the code, not just the rules.
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