Learn · Electrical
Electrical
From your first circuit to your contractor license: electrical theory, calculations, code navigation and the exams, taught properly and in order.
Learning paths
Journeyman Electrician Exam Prep
Walk into the journeyman exam with every tested subject covered, in the order that builds
73 steps →
Master Electrician Exam Prep
Everything the master exam adds on top of your journeyman knowledge
12 steps →
Electrical Foundations
The theory spine everything electrical stands on
19 steps →
Just browsing? Start here: Atoms and Electric Charge →
Content
Theory 19 lessons
Fundamentals
- Atoms and Electric Charge
- Voltage
- Current
- Resistance
- How Ohm's Law Works
Ohm's law is the relationship every electrical calculation stands on: current equals voltage divided by resistance.
- Electrical Power
- Electrical Energy and kWh
- Series Circuits
- Parallel Circuits
- Series-Parallel Circuits
- Meters and Measurement
Calculations 14 lessons
Conductors
- Ampacity
- Conductor Sizing
- Voltage Drop Calculations
Voltage drop is the voltage a circuit loses in its own conductors before it reaches the load.
- Derating and Adjustment Factors
- Box Fill Calculations
- Conduit Fill Calculations
Loads
Wiring Methods 16 lessons
Raceways
Grounding Bonding 11 lessons
Concepts
Services Distribution 11 lessons
Motors Transformers 14 lessons
Motors
Transformers
Code 6 lessons
Safety 7 lessons
Licensing 9 lessons
Journeyman
- The Journeyman Electrician License
- The Journeyman Exam: What It Tests and How
- Journeyman Requirements by State
- Texas Journeyman Electrician License
Texas runs one of the clearest journeyman electrician ladders in the country: one state agency, one exam vendor, annual renewal, and hour requirements that are published rather tha
Master
- The Master Electrician License
The master electrician license is the highest individual credential in the electrical trade.
- The Master Exam: What Changes From Journeyman
The master electrician exam tests whether you can be responsible for electrical work, not just perform it.
Contractor
- The Electrical Contractor License
The electrical contractor license is a business credential built on top of a person.
- NASCLA-Accredited Electrical Exams
NASCLA accreditation exists to solve one expensive problem: a contractor who works in several states taking a fresh technical exam in every one of them.
- Starting an Electrical Business
Starting an electrical business is mostly not an electrical problem.