Journeyman vs Master Electrician Exam

Who Licenses Electricians

There is no national electrician licence in the U.S. Licensing is set by states, and in some places by cities or counties. Each jurisdiction decides the licence levels, experience requirements, exam vendor and which edition of the National Electrical Code (NFPA 70) is in force. Always check with your board first.

Most jurisdictions use a ladder like this:

1. Apprentice (registered, works under supervision)
2. Journeyman (licensed to perform electrical work, often under a master or contractor)
3. Master (licensed to plan and supervise work, and often to pull permits or qualify a contractor)

Eligibility Compared

The Texas figures are from TDLR’s electricians program; confirm current requirements on the TDLR site before you apply. Other states differ.

What the Journeyman Exam Covers

Content varies by vendor, but journeyman exams usually emphasise installation rules:

• Definitions (Article 100) and general requirements (Article 110)
• Branch circuits (Article 210) and feeders (Article 215)
• Overcurrent protection (Article 240)
• Grounding and bonding (Article 250)
• Wiring methods and raceways (Chapter 3), including box fill (314.16) and conduit fill (Chapter 9 tables and Annex C)
• Conductor ampacity (310.16 and adjustment and correction factors)
• Motors basics (Article 430)
• Special locations such as hazardous locations, pools (Article 680) and health care
• Basic electrical theory (Ohm’s law, power formulas, series and parallel circuits)

What the Master Exam Adds

Master exams usually go further into responsibility and design:

• Service and feeder load calculations (Article 220), including dwelling standard and optional methods
• Service sizing (Article 230) and transformer protection (Article 450)
• Motor circuit design: full-load currents from the 430 tables, conductor sizing and branch-circuit protection (430.52)
• Generators, solar PV and energy storage (Articles 445, 690, 706 and related), depending on edition
• Plan reading and specification questions in some exams
• Business and law sections in some jurisdictions, covering licensing rules, permits and sometimes lien law and taxes

Difficulty: How They Compare

Candidates commonly report the master exam as harder, because more questions require multi-step calculations and finding several code sections. The journeyman exam is often more about speed: locating the right table or rule quickly. Both are timed, so code navigation matters. Our NEC Exam Tips for Electricians focus on that skill.

Pass marks and question counts vary by vendor. Don’t rely on numbers from other states; check your candidate information bulletin.

Preparing for the Journeyman Exam

1. Get the correct NEC edition for your jurisdiction.
2. Learn the code’s structure: Chapters 1–4 apply generally, 5–7 modify them for special occupancies, equipment and conditions, Chapter 8 covers communications, Chapter 9 holds tables.
3. Practise lookups with a timer.
4. Drill box fill, conduit fill, ampacity and voltage drop.
5. Review electrical theory formulas.

Preparing for the Master Exam

1. Master Article 220 calculations with worked examples.
2. Practise motor and transformer problems end to end.
3. Study your state’s licensing law if a law section is included.
4. Take full timed mocks, since stamina matters.

Career Context

Licensing levels affect what work you can do and supervise. The U.S. Bureau of Labor Statistics notes that most states require electricians to be licensed and that requirements vary. For the full path from apprentice onward, see How to Become a Licensed Electrician. If you’re in Texas, follow our Texas Journeyman Electrician Practice Test page for upcoming practice questions.

Which Should You Aim For?

Most electricians pass the journeyman exam first and work for several years before the master exam. If you plan to run a business, pull permits or qualify a contracting company, the master licence (or your state’s contractor licence) is usually the goal.

Sample Question Types

These illustrate the difference in style. They aren’t actual exam questions.

Journeyman style: “What is the maximum number of 12 AWG conductors permitted in a given metal box?” You’d go to 314.16, find the box volume, apply volume allowances and count.

Master style: “Calculate the minimum service size for a dwelling with given floor area, appliances and HVAC load using the standard method.” You’d work through Article 220 step by step, apply demand factors and select the service rating.

The first tests lookup accuracy; the second tests multi-step reasoning across several sections.

Study Time Compared

Candidates usually spend longer preparing for the master exam, mainly on calculations. A practical approach is to keep a calculation notebook: one worked example of each type (dwelling load, motor circuit, transformer, voltage drop) with the code references used. Rework it weekly until each type is quick.

After the Exam

Passing the master exam doesn’t always mean you can contract. Some jurisdictions require a separate contractor licence, insurance and a business registration. Check whether your state ties contracting to the master licence or treats it separately.

Key Terms

• Article 220: the NEC article for branch-circuit, feeder and service load calculations.
• Demand factor: a reduction applied to connected load because not all loads run at once.
• Candidate information bulletin: the testing vendor’s document that sets exam content, allowed materials and rules.
• Full-load current (FLC): the motor current values from the NEC 430 tables, used for sizing instead of nameplate in many cases.

An Example: Texas

Texas is a useful example because its official requirements are public and detailed. Under Texas Occupations Code Chapter 1305, a journeyman electrician applicant needs at least 8,000 hours of on-the-job training under the supervision of a master electrician and must pass the journeyman exam. TDLR lets applicants with at least 7,000 hours take the exam early.

The PSI candidate bulletin for Texas, effective 1 September 2026, splits the journeyman exam into two portions: NEC Knowledge (59 items, 130 minutes) and Calculations (26 items, 110 minutes). Each portion needs 70% to pass. The master electrician exam uses a longer NEC Knowledge portion, 75 items in 150 minutes, and gives more items to areas such as services and branch circuits. Both exams are open book and are based on the 2026 NEC from that date. Other states use different formats, so treat these figures as Texas-specific.

The Business Side

In many states, a master licence is what allows someone to act as the responsible licensee for an electrical contractor. Some states add a separate business and law exam for contractors, covering topics such as lien law, insurance and recordkeeping. If your goal is to run your own shop, find out early whether your state requires this extra exam.