Free practice test — 12 questions with full explanations
Original CraftPATH practice questions. These are not real exam questions. Every answer includes the reasoning, why each wrong option fails, the code area it comes from, and the misconception it targets.
Question 1. A Washington 02 residential specialty certificate holder is limited to electrical work in:
Washington Law and Administrative Rules · Medium · Objective: Distinguish Washington certificate scopes.
- A. Any occupancy under a fixed dollar value
- B. Residential occupancies within the scope defined by rule (correct)
- C. Commercial buildings under three stories
- D. Any occupancy statewide, identical to the 01 certificate
Correct answer: B. Residential occupancies within the scope defined by rule
Why this is right: Washington's specialty certificates are scoped by the type of work and occupancy defined in rule. The 01 general journeyman is the broadest certificate and is not limited that way.
Why the other options are wrong:
- A. Any occupancy under a fixed dollar value — Project value does not define the specialty scopes.
- C. Commercial buildings under three stories — The residential specialty is not a general commercial credential.
- D. Any occupancy statewide, identical to the 01 certificate — If it were identical, the 01 certificate would serve no purpose.
Where this shows up on the job: Taking commercial tenant improvement work on a residential specialty is a frequent enforcement issue.
Code reference: RCW 19.28; WAC 296-46B
Common misconception: Treating specialty certificates as smaller versions of the 01.
Question 2. To qualify for the Washington 01 journeyman examination, a candidate generally must:
Washington Law and Administrative Rules · Medium · Objective: Understand the trainee pathway.
- A. Pass the exam first and log hours afterward
- B. Work as a registered electrical trainee under supervision, logging documented hours by work category, and complete required classroom training (correct)
- C. Hold a journeyman license from any other state
- D. Own an electrical contracting business for two years
Correct answer: B. Work as a registered electrical trainee under supervision, logging documented hours by work category, and complete required classroom training
Why this is right: Washington front-loads supervised experience. Trainees register with Labor and Industries, work under a certified electrician, log hours in specified work categories, and complete the required classroom training before sitting the exam.
Why the other options are wrong:
- A. Pass the exam first and log hours afterward — Eligibility precedes the examination.
- C. Hold a journeyman license from any other state — Out-of-state credentials are recognized only under specific reciprocity terms, if at all.
- D. Own an electrical contracting business for two years — Business ownership is not an experience pathway for the certificate.
Where this shows up on the job: Trainees who never log their hours by category are the ones who get denied at application even after years in the field.
Code reference: RCW 19.28; WAC 296-46B trainee provisions
Common misconception: Assuming total hours matter more than the category breakdown.
Question 3. Electrical installations in Washington are judged against:
General Requirements and Code Navigation · Medium · Objective: Identify the governing technical rules.
- A. The National Electrical Code exactly as published by NFPA
- B. The NEC as adopted and amended by Washington in WAC 296-46B (correct)
- C. A code written independently by each county
- D. The International Building Code alone
Correct answer: B. The NEC as adopted and amended by Washington in WAC 296-46B
Why this is right: Washington adopts the NEC and then amends it in WAC 296-46B. Where the state amendment differs from the model code, the amendment governs, and exam questions are written to the amended rules.
Why the other options are wrong:
- A. The National Electrical Code exactly as published by NFPA — The unamended NEC is not the enforced standard.
- C. A code written independently by each county — Counties enforce state rules rather than writing their own electrical codes.
- D. The International Building Code alone — The IBC does not contain electrical installation provisions.
Where this shows up on the job: Reading only a national prep book is how candidates miss the Washington-specific items entirely.
Code reference: WAC 296-46B
Common misconception: Studying the NEC without the state amendments.
Question 4. In a box fill calculation, all equipment grounding conductors present together count as:
Conductors, Ampacity, Raceways and Boxes · Hard · Objective: Apply box fill calculation rules.
- A. One volume allowance each
- B. A single volume allowance based on the largest equipment grounding conductor (correct)
- C. No volume allowance at all
- D. Two volume allowances regardless of count
Correct answer: B. A single volume allowance based on the largest equipment grounding conductor
Why this is right: All equipment grounding conductors in a box count collectively as one conductor volume, sized by the largest of them, because they occupy relatively little space and are bundled at the back of the box.
Why the other options are wrong:
- A. One volume allowance each — Counting each one individually overstates the fill.
- C. No volume allowance at all — They do count, just collectively.
- D. Two volume allowances regardless of count — A flat two-allowance rule does not exist for grounds.
Where this shows up on the job: Device yokes, cable clamps and fixture studs each carry their own allowances, and forgetting them is what makes real boxes overfill.
Code reference: NEC 314.16(B)
Common misconception: Treating grounds like current-carrying conductors in the fill count.
Question 5. The maximum fill for a conduit containing more than two conductors is:
Conductors, Ampacity, Raceways and Boxes · Hard · Objective: Apply raceway fill limits.
- A. 31 percent of the conduit cross-sectional area
- B. 40 percent of the conduit cross-sectional area (correct)
- C. 53 percent of the conduit cross-sectional area
- D. 60 percent of the conduit cross-sectional area
Correct answer: B. 40 percent of the conduit cross-sectional area
Why this is right: Chapter 9 permits 53 percent fill for a single conductor, 31 percent for two, and 40 percent for three or more, so heat can dissipate and conductors can be pulled without damaging insulation.
Why the other options are wrong:
- A. 31 percent of the conduit cross-sectional area — 31 percent applies to exactly two conductors.
- C. 53 percent of the conduit cross-sectional area — 53 percent applies to a single conductor.
- D. 60 percent of the conduit cross-sectional area — 60 percent is not a permitted fill percentage.
Where this shows up on the job: Nipples 24 inches or shorter are permitted 60 percent fill, which is a favorite exception on exams.
Code reference: NEC Chapter 9, Table 1 and Note 4
Common misconception: Applying the single-conductor percentage to a multi-conductor pull.
Question 6. For equipment rated 100 amperes or less with terminations marked 60 degrees Celsius, conductor ampacity must be taken from:
Conductors, Ampacity, Raceways and Boxes · Medium · Objective: Apply termination temperature limits.
- A. The 60 degree column (correct)
- B. The 75 degree column
- C. The 90 degree column
- D. Whichever column yields the smaller conductor
Correct answer: A. The 60 degree column
Why this is right: Final conductor ampacity is limited by the lowest temperature rating of any termination, conductor or device in the circuit. A 60 degree marking forces the 60 degree column even if the conductor insulation is rated higher.
Why the other options are wrong:
- B. The 75 degree column — The 75 degree column applies only when the terminations are rated for it.
- C. The 90 degree column — The 90 degree column is used for correction and adjustment math, not final sizing.
- D. Whichever column yields the smaller conductor — Column choice is dictated by equipment marking, not convenience.
Where this shows up on the job: This is why buying 90 degree rated conductor rarely lets you drop a wire size at the panel.
Code reference: NEC 110.14(C)
Common misconception: Treating insulation rating as usable ampacity.
Question 7. A dwelling unit kitchen requires a minimum of how many 20-ampere small-appliance branch circuits?
Branch Circuits, Feeders and Load Calculations · Hard · Objective: Apply small-appliance branch circuit requirements.
- A. One
- B. Two (correct)
- C. Three
- D. Four
Correct answer: B. Two
Why this is right: At least two 20-ampere small-appliance branch circuits must serve the receptacle outlets in the kitchen, pantry, breakfast room and dining room, and they may not supply other outlets.
Why the other options are wrong:
- A. One — One circuit cannot carry typical kitchen appliance loads.
- C. Three — Three is more than the minimum, though often installed.
- D. Four — Four exceeds the minimum requirement.
Where this shows up on the job: Countertop receptacles also need GFCI protection and specific spacing, which is commonly tested alongside this rule.
Code reference: NEC 210.11(C)(1) and 210.52(B)
Common misconception: Counting the dedicated dishwasher or disposal circuit toward the two required circuits.
Question 8. In a standard-method dwelling calculation, the laundry branch circuit load is taken as:
Branch Circuits, Feeders and Load Calculations · Hard · Objective: Apply appliance load values.
- A. 1,000 volt-amperes
- B. 1,500 volt-amperes (correct)
- C. 2,000 volt-amperes
- D. 3,000 volt-amperes
Correct answer: B. 1,500 volt-amperes
Why this is right: The laundry circuit is calculated at 1,500 volt-amperes, the same value as each small-appliance branch circuit, and all of them are added to the general lighting load before demand factors are applied.
Why the other options are wrong:
- A. 1,000 volt-amperes — 1,000 volt-amperes understates the required value.
- C. 2,000 volt-amperes — 2,000 volt-amperes is not the code value.
- D. 3,000 volt-amperes — 3,000 volt-amperes is the first demand step, not the laundry load.
Where this shows up on the job: Missing the laundry or one small-appliance circuit is the most common arithmetic slip in the service calculation.
Code reference: NEC 220.52
Common misconception: Applying demand factors before combining these loads with general lighting.
Question 9. GFCI protection for personnel operates by:
Grounding, Bonding and Services · Hard · Objective: Apply GFCI protection requirements.
- A. Opening when total current exceeds the breaker rating
- B. Detecting a current imbalance between the ungrounded and grounded conductors and opening at a low milliampere threshold (correct)
- C. Measuring voltage drop across the load
- D. Sensing arcing signatures in the circuit
Correct answer: B. Detecting a current imbalance between the ungrounded and grounded conductors and opening at a low milliampere threshold
Why this is right: A GFCI compares current leaving on the ungrounded conductor with current returning on the grounded conductor. An imbalance means current is flowing somewhere else, potentially through a person, so the device trips at a low milliampere level.
Why the other options are wrong:
- A. Opening when total current exceeds the breaker rating — That describes overcurrent protection.
- C. Measuring voltage drop across the load — Voltage drop is not the sensing mechanism.
- D. Sensing arcing signatures in the circuit — Arc signature detection describes AFCI protection.
Where this shows up on the job: A GFCI protects people; an equipment grounding conductor and breaker protect equipment. Exam questions test whether you know the difference.
Code reference: NEC 210.8 and Article 100 definitions
Common misconception: Believing a GFCI replaces the need for an equipment grounding conductor.
Question 10. The grounded conductor and equipment grounding conductors may be connected together:
Grounding, Bonding and Services · Hard · Objective: Apply neutral and ground separation.
- A. At every panelboard in the building
- B. Only at the service disconnecting means, and at separately derived systems as permitted (correct)
- C. Only at the farthest subpanel
- D. Anywhere a ground rod is installed
Correct answer: B. Only at the service disconnecting means, and at separately derived systems as permitted
Why this is right: Bonding the neutral to ground at the service disconnect establishes a single fault-current return path. Bonding again downstream puts normal neutral current on equipment grounding conductors and metal enclosures.
Why the other options are wrong:
- A. At every panelboard in the building — Bonding at every panel creates parallel neutral paths.
- C. Only at the farthest subpanel — Distance does not authorize a second bond.
- D. Anywhere a ground rod is installed — A ground rod does not create a bonding point for the neutral.
Where this shows up on the job: Objectionable current on metal piping and enclosures is the tell-tale symptom of a downstream neutral bond.
Code reference: NEC 250.24 and 250.142
Common misconception: Thinking more bonding points make a system safer.
Question 11. Branch circuit conductors for a single continuous-duty motor must be sized at not less than:
Motors, Transformers and Special Occupancies · Hard · Objective: Apply motor conductor sizing.
- A. 100 percent of nameplate full-load amperes
- B. 125 percent of the full-load current value from the applicable NEC table (correct)
- C. 125 percent of nameplate amperes
- D. 80 percent of locked rotor current
Correct answer: B. 125 percent of the full-load current value from the applicable NEC table
Why this is right: Conductor sizing uses the table full-load current value, not the nameplate, multiplied by 125 percent. The nameplate value is used for overload protection, which is a separate calculation.
Why the other options are wrong:
- A. 100 percent of nameplate full-load amperes — That omits the multiplier and uses the wrong current basis.
- C. 125 percent of nameplate amperes — Nameplate current belongs in the overload calculation.
- D. 80 percent of locked rotor current — Locked rotor current governs short-circuit and disconnect considerations.
Where this shows up on the job: The table-versus-nameplate distinction is the single most reliable way candidates lose motor points.
Code reference: NEC 430.6(A), 430.22 and 430.32
Common misconception: Using one current value for every motor calculation.
Question 12. The minimum depth of working space in front of a 120/240-volt panelboard with exposed live parts on one side and no grounded parts opposite is generally:
Motors, Transformers and Special Occupancies · Medium · Objective: Apply working space requirements.
- A. 2 feet
- B. 3 feet (correct)
- C. 3 feet 6 inches
- D. 4 feet
Correct answer: B. 3 feet
Why this is right: For nominal voltages to ground of 150 volts or less under Condition 1, the required clear working space depth is 3 feet, and the space must be clear and readily accessible for the full required width and height.
Why the other options are wrong:
- A. 2 feet — 2 feet does not satisfy any condition at this voltage.
- C. 3 feet 6 inches — 3 feet 6 inches applies to Condition 2 at higher voltage ranges.
- D. 4 feet — 4 feet applies to Condition 3 at higher voltage ranges.
Where this shows up on the job: Storage stacked in front of a panel in a garage or utility room is one of the most cited working space violations.
Code reference: NEC 110.26(A)(1)
Common misconception: Believing the space only matters while work is being performed.
How to study for the Washington 01 journeyman electrician exam
Read WAC 296-46B alongside the NEC
Washington amends the model code, and the amendments are exactly where a national prep book leaves you exposed. Work through WAC 296-46B start to finish once, flagging every place it modifies or adds to the NEC, then keep that list next to you while you drill.
Log and verify your hours before you apply
Eligibility is category-based, not just total hours. Confirm your trainee hour affidavits are complete and correctly categorized well before you apply, because a denial at this stage costs months.
Build code navigation speed
Tab Articles 100, 110, 210, 220, 240, 250, 310, 314, 430 and 450, plus Chapter 9 and Annex C. Practice with a stopwatch, and if any lookup takes more than 45 seconds, retab it.
Own the service calculation and the ampacity chain
Work the standard-method dwelling calculation end to end until it is reflexive, and drill ampacity problems where ambient correction, conductor-count adjustment and the termination temperature limit all apply in sequence.
Run a six-week plan
Week one: Washington law, WAC administration and definitions. Week two: branch circuits, feeders and load calculations. Week three: conductors, ampacity, raceway and box fill. Week four: grounding, bonding and services. Week five: motors, transformers and special occupancies. Week six: full-length timed sets under exam conditions.
Frequently asked questions
What is the difference between the 01 and 02 certificates?
The 01 general journeyman is the broadest electrician certificate in Washington. The 02 residential certificate and the limited specialties are scoped to narrower categories of work defined by rule.
Do I have to be a registered trainee first?
Washington's normal pathway is registering as an electrical trainee, working under supervision, logging documented hours by work category, and completing required classroom training before sitting the exam.
How many hours do I need?
Total and category-specific hour thresholds are set by rule and revised periodically, so we leave those figures pending here. Confirm the current numbers with Labor and Industries.
Which code edition should I study?
The NEC edition Washington has adopted, together with the state amendments in WAC 296-46B. Both matter, and the amendments are what national prep material misses.
Is the exam open book?
Labor and Industries publishes the permitted references and exam format in its current examination information. Check that before you schedule.
Are these real Washington exam questions?
No. Every question here is original CraftPATH material written to the same subject areas the exam covers. We do not reproduce live examination content.
How long should I study?
Most trainees need six to ten weeks of focused review, weighted toward load calculations, ampacity and fill math, grounding, and the Washington-specific rules.