Page 1 of 104
WA Master Electrician 07Nonresidential
Maintenanceination (OLD VERSION) Exam ACTUAL
QUESTIONS AND ANSWERS LATEST UPDATE THIS
YEAR
Summarized Exam Topics Covered (Actual WA 07 Old Version)
• Scope of Work (WAC 296-46B-920) – Like-in-kind maintenance, repair, replacement of existing
electrical equipment and conductors; no new branch circuits or luminaire relocation
• Washington State Laws (RCW 19.28) – Compliance with state statutes, rules, and NEC;
administrator responsibilities; licensing requirements
• NEC General Requirements (Articles 90–110) – Working space (110.26), accessible equipment,
labeling, enclosure types
• Wiring Methods and Materials (NEC 300–399) – EMT, MC cable, raceways, conductor ampacity
(Table 310.15(B)(16)), conduit fill
• Overcurrent Protection (NEC 240) – Breaker sizing, continuous loads, feeder and branch circuit
protection
• Grounding and Bonding (NEC 250) – Equipment grounding conductors, grounding electrode
system, bonding requirements
• Luminaires and Lighting (NEC 410) – Ballast replacement, retrofit kits, fixture listings, thermal
protection
• Motors and Motor Controls (NEC 430) – Overload protection, disconnecting means within sight,
motor feeder sizing
• Hazardous Locations (NEC 500–516) – Class I (gases), Class II (dust), Class III (fibers) – 07C
restrictions
• Special Occupancies and Equipment (NEC 500–700) – Emergency systems (700), fire alarm
circuits (760), signs
• Electrical Safety (WISHA/OSHA) – Lockout/tagout, PPE, arc-flash protection, confined space
• Load Calculations (NEC 220) – Branch circuit and feeder sizing, continuous load factors
• Basic Electrical Theory – Ohm’s Law, series/parallel circuits, power formula (P=IE), AC/DC
, Page 2 of 104
• Tools and Test Equipment – Non-contact voltage tester (best for verifying absence of voltage),
multimeters
• Washington Administrative Code (WAC 296-46B) – Permit requirements, fees, enforcement,
penalties
11. An 07A electrician is asked to replace a fluorescent fixture with an LED retrofit kit. The new kit
includes a different driver that requires a new junction box mounted outside the fixture housing. Is this
permitted under WAC 296-46B-920(h)?
A) Yes, if the driver is listed for the fixture
B) No, because work outside the luminaire body is not allowed for 07A
C) Yes, with an electrical permit
D) No, unless a master electrician supervises
Answer: B
Rationale: 07A scope is limited to inside the luminaire body; remote ballasts/drivers may only be
replaced with approved products, but adding a new junction box outside is not permitted .
12. A 120-volt branch circuit supplies lighting in a commercial office. The load is continuous (12 amps).
What is the minimum branch circuit rating per NEC Article 210?
A) 12 amps
B) 15 amps
C) 20 amps
D) 30 amps
, Page 3 of 104
Answer: B
Rationale: Continuous loads must be calculated at 125% (12A × 1.25 = 15A) .
13. During a motor replacement, you need to install a new disconnecting means. Where must it be
located per NEC 430.102?
A) Inside the motor junction box
B) Within sight of the motor and not more than 50 feet away
C) Anywhere on the same floor
D) At the main service entrance only
Answer: B
Rationale: Motor disconnects must be within sight (visible and not more than 50 ft) .
14. A building owner asks you to replace a 20-amp breaker with a 30-amp breaker on an existing circuit
to stop nuisance tripping. The conductors are 12 AWG copper. What must you do?
A) Replace only the breaker – it will work fine
B) Upgrade the conductors to 10 AWG first
C) Install a time-delay fuse instead
D) Leave the 20-amp breaker and add a second circuit
Answer: B
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Rationale: NEC 240.4(D) limits 12 AWG to 20A overcurrent protection; increasing breaker without larger
wire violates code .
15. You are performing maintenance in a commercial kitchen. Where is GFCI protection required for
receptacles per NEC 210.8(A)(3)?
A) Behind the refrigerator
B) Under the sink
C) For hand-drying stations (restroom receptacles in commercial buildings)
D) For all lighting switches
Answer: C
Rationale: Restroom receptacles in commercial buildings require GFCI protection .
16. A non-contact voltage tester indicates a lighting fixture is de-energized. What is the safest next step
before touching any wires?
A) Begin replacing the ballast immediately
B) Test the tester on a known live circuit, then re-test the fixture
C) Assume it is safe and proceed
D) Notify the building owner
Answer: B
Rationale: Always verify tester functionality on a known live source before trusting a dead reading .
WA Master Electrician 07Nonresidential
Maintenanceination (OLD VERSION) Exam ACTUAL
QUESTIONS AND ANSWERS LATEST UPDATE THIS
YEAR
Summarized Exam Topics Covered (Actual WA 07 Old Version)
• Scope of Work (WAC 296-46B-920) – Like-in-kind maintenance, repair, replacement of existing
electrical equipment and conductors; no new branch circuits or luminaire relocation
• Washington State Laws (RCW 19.28) – Compliance with state statutes, rules, and NEC;
administrator responsibilities; licensing requirements
• NEC General Requirements (Articles 90–110) – Working space (110.26), accessible equipment,
labeling, enclosure types
• Wiring Methods and Materials (NEC 300–399) – EMT, MC cable, raceways, conductor ampacity
(Table 310.15(B)(16)), conduit fill
• Overcurrent Protection (NEC 240) – Breaker sizing, continuous loads, feeder and branch circuit
protection
• Grounding and Bonding (NEC 250) – Equipment grounding conductors, grounding electrode
system, bonding requirements
• Luminaires and Lighting (NEC 410) – Ballast replacement, retrofit kits, fixture listings, thermal
protection
• Motors and Motor Controls (NEC 430) – Overload protection, disconnecting means within sight,
motor feeder sizing
• Hazardous Locations (NEC 500–516) – Class I (gases), Class II (dust), Class III (fibers) – 07C
restrictions
• Special Occupancies and Equipment (NEC 500–700) – Emergency systems (700), fire alarm
circuits (760), signs
• Electrical Safety (WISHA/OSHA) – Lockout/tagout, PPE, arc-flash protection, confined space
• Load Calculations (NEC 220) – Branch circuit and feeder sizing, continuous load factors
• Basic Electrical Theory – Ohm’s Law, series/parallel circuits, power formula (P=IE), AC/DC
, Page 2 of 104
• Tools and Test Equipment – Non-contact voltage tester (best for verifying absence of voltage),
multimeters
• Washington Administrative Code (WAC 296-46B) – Permit requirements, fees, enforcement,
penalties
11. An 07A electrician is asked to replace a fluorescent fixture with an LED retrofit kit. The new kit
includes a different driver that requires a new junction box mounted outside the fixture housing. Is this
permitted under WAC 296-46B-920(h)?
A) Yes, if the driver is listed for the fixture
B) No, because work outside the luminaire body is not allowed for 07A
C) Yes, with an electrical permit
D) No, unless a master electrician supervises
Answer: B
Rationale: 07A scope is limited to inside the luminaire body; remote ballasts/drivers may only be
replaced with approved products, but adding a new junction box outside is not permitted .
12. A 120-volt branch circuit supplies lighting in a commercial office. The load is continuous (12 amps).
What is the minimum branch circuit rating per NEC Article 210?
A) 12 amps
B) 15 amps
C) 20 amps
D) 30 amps
, Page 3 of 104
Answer: B
Rationale: Continuous loads must be calculated at 125% (12A × 1.25 = 15A) .
13. During a motor replacement, you need to install a new disconnecting means. Where must it be
located per NEC 430.102?
A) Inside the motor junction box
B) Within sight of the motor and not more than 50 feet away
C) Anywhere on the same floor
D) At the main service entrance only
Answer: B
Rationale: Motor disconnects must be within sight (visible and not more than 50 ft) .
14. A building owner asks you to replace a 20-amp breaker with a 30-amp breaker on an existing circuit
to stop nuisance tripping. The conductors are 12 AWG copper. What must you do?
A) Replace only the breaker – it will work fine
B) Upgrade the conductors to 10 AWG first
C) Install a time-delay fuse instead
D) Leave the 20-amp breaker and add a second circuit
Answer: B
, Page 4 of 104
Rationale: NEC 240.4(D) limits 12 AWG to 20A overcurrent protection; increasing breaker without larger
wire violates code .
15. You are performing maintenance in a commercial kitchen. Where is GFCI protection required for
receptacles per NEC 210.8(A)(3)?
A) Behind the refrigerator
B) Under the sink
C) For hand-drying stations (restroom receptacles in commercial buildings)
D) For all lighting switches
Answer: C
Rationale: Restroom receptacles in commercial buildings require GFCI protection .
16. A non-contact voltage tester indicates a lighting fixture is de-energized. What is the safest next step
before touching any wires?
A) Begin replacing the ballast immediately
B) Test the tester on a known live circuit, then re-test the fixture
C) Assume it is safe and proceed
D) Notify the building owner
Answer: B
Rationale: Always verify tester functionality on a known live source before trusting a dead reading .
