Download PrepIQ Utah UT RMEME Residential Master Electrician Ultimate Exam and more Exams Technology in PDF only on Docsity!
Master Electrician Ultimate Exam
Question 1 Which Utah statute defines the distinction between a Residential Master Electrician and a Residential Journeyman? A) Utah Electricians Licensing Act, R156-55b B) Utah Electrical Safety Code, R156- C) Utah Building Code, Chapter 33 D) Utah Occupational Licensing Act, Section 5 Answer: A Explanation: The Utah Electricians Licensing Act (R156-55b) contains the definitions and scope of practice for the various residential classifications, including Master and Journeyman levels. Question 2 Under Utah law, what is the maximum number of apprentices a Residential Master Electrician may directly supervise on a residential job site? A) 1 B) 2 C) 3 D) No limit, as long as the Master is on site Answer: B Explanation: Utah R156-55b specifies a supervision ratio of one Residential Master to two apprentices for residential work. Question 3 Which of the following is a required continuing education topic for license renewal in Utah? A) Advanced HVAC controls B) Updates to the NEC every three years C) Solar photovoltaic system design D) Fire alarm system installation Answer: B Explanation: Continuing education must include updates to the National Electrical Code (NEC) as it is adopted and revised, ensuring electricians stay current with code changes.
Master Electrician Ultimate Exam
Question 4 If a Utah electrician’s license expires, which action must be taken before the license can be reinstated? A) Pay a reinstatement fee and complete a refresher course B) Submit a new application with a background check C) Complete a minimum of 20 hours of on-the-job training D) No action; the license automatically renews after 30 days Answer: A Explanation: Utah regulations require payment of a reinstatement fee and completion of a prescribed refresher or continuing education course before an expired license can be reactivated. Question 5 Which of the following conduct is classified as “unprofessional” under Utah General Rules of the Division (R156-1)? A) Working overtime without overtime pay B) Using a non-licensed apprentice for a paid job C) Failing to wear safety glasses on a job site D) Refusing to work on a residential circuit Answer: B Explanation: Using an unlicensed individual to perform work that requires a license is considered unprofessional and unlawful conduct per R156-1. Question 6 Ohm’s Law is fundamental to electrical calculations. If a circuit has a voltage of 120 V and a resistance of 30 Ω, what is the current? A) 2 A B) 3 A C) 4 A D) 5 A Answer: B Explanation: Using I = V / R, 120 V ÷ 30 Ω = 4 A. (Correction: 120 ÷ 30 = 4 A, therefore answer should be C.)
Master Electrician Ultimate Exam
Answer: A Explanation: Table 310.15(B)(16) shows that 2/0 AWG copper THHN at 75 °C is rated for 195 A, which is the next size up to meet or exceed a 200 A requirement when adjusted for the 125 % rule for service conductors. Question 10 Which of the following appliances uses the highest demand factor for residential load calculations? A) Electric dryer (5 kW) B) Electric range (12 kW) C) Central air-conditioner (5 ton) D) Electric water heater (4.5 kW) Answer: B Explanation: Electric ranges are given a demand factor of 50 % for the first 10 kW and 100 % for the remainder, resulting in a higher overall demand factor compared to the other listed appliances. Question 11 According to NEC Article 230, what is the minimum clearance required between a service-drop conductor and a residential roof edge? A) 3 ft B) 4 ft C) 6 ft D) 8 ft Answer: B Explanation: NEC 230.70(A)(1) requires a minimum of 4 ft clearance between service-drop conductors and any roof edge or projection. Question 12 When installing a service-entrance conductor that will be exposed to direct sunlight, which insulation type is acceptable? A) XHHW-2 only B) THWN-2 only C) Any type rated for 90 °C in wet locations
Master Electrician Ultimate Exam
D) Only UF cable Answer: C Explanation: Conductors rated for 90 °C in wet locations (e.g., XHHW-2, THWN-2) are permitted for service-entrance conductors exposed to sunlight, provided they are installed per code. Question 13 Which NEC article dictates the mandatory installation of a 20-amp small-appliance branch circuit in every kitchen? A) Article 210.11(C)(1) B) Article 210.52(B)(1) C) Article 210.23(A)(1) D) Article 210.8(A)(2) Answer: B Explanation: NEC 210.52(B)(1) requires at least two 20-amp small-appliance circuits to serve countertop receptacles in kitchens. Question 14 In a residential bathroom, where must a GFCI-protected receptacle be installed according to NEC 210.8(A)(1)? A) Within 3 ft of the sink faucet B) Only within the shower stall C) Anywhere in the bathroom, regardless of distance D) Only on dedicated circuits Answer: C Explanation: All receptacles in a bathroom must be GFCI-protected, regardless of location, per NEC 210.8(A)(1). Question 15 What is the correct identification color for a grounded (neutral) conductor in a NM cable used in Utah residential wiring? A) Black B) White C) Green
Master Electrician Ultimate Exam
D) 8 in Answer: B Explanation: NEC 250.52(A)(3) requires a minimum of 4 in of concrete cover over a Ufer ground electrode. Question 19 Which of the following conduit types is permitted for direct burial in Utah residential construction without additional protection? A) EMT B) RMC C) PVC Schedule 40 D) Flexible metal conduit (FMC) Answer: C Explanation: PVC Schedule 40 conduit is listed for direct burial and does not require additional physical protection. Question 20 What is the minimum burial depth for a UF cable installed under a residential driveway in Utah? A) 6 in B) 12 in C) 18 in D) 24 in Answer: B Explanation: NEC 300.5(B)(4) requires a minimum of 12 in of cover for UF cable installed under a driveway. Question 21 When performing box-fill calculations for a NM cable feeding a junction box, how many conductors are counted for the equipment grounding conductor? A) 0 cu in (not counted) B) 1 cu in (regardless of size) C) Same as the largest current-carrying conductor
Master Electrician Ultimate Exam
D) 2 cu in for each grounding conductor Answer: B Explanation: NEC 314.16(B) states that each equipment grounding conductor counts as one conductor volume equal to one “device” (typically 1 cu in for # or #14). Question 22 Which NEC article governs the installation of receptacles in a residential garage? A) Article 210.11(C)(2) B) Article 210.52(G) C) Article 210.8(B) D) Article 210.7(C) Answer: C Explanation: NEC 210.8(B) requires GFCI protection for all receptacles in garages, accessory buildings, and unfinished basements. Question 23 In a residential swimming pool area, which of the following is required for the pool pump motor circuit? A) AFCI protection only B) GFCI protection only C) Both AFCI and GFCI protection D) No special protection required Answer: B Explanation: NEC 680.22(A) mandates GFCI protection for pool pump motors; AFCI is not required for this equipment. Question 24 What is the minimum distance a receptacle must be placed from the water’s edge of a residential pool? A) 3 ft B) 4 ft C) 6 ft
Master Electrician Ultimate Exam
D) Article 210.11(D) Answer: A Explanation: NEC 210.12(A)(1) mandates AFCI protection for all 120-V, single-phase, 15- and 20-amp branch circuits supplying outlets in bedrooms. Question 28 A residential circuit supplies a wall-mounted TV and a set-top box. The total load is 250 W. What is the minimum ampacity of the branch-circuit conductor? A) 12 A B) 15 A C) 20 A D) 30 A Answer: B Explanation: 250 W ÷ 120 V = 2.08 A. The smallest standard residential branch circuit is 15 A, which provides ample capacity. Question 29 Which grounding electrode is considered the most effective for a new residential construction on a concrete slab? A) Ground rod driven 6 ft deep B) Metal water pipe C) Concrete-encased electrode (Ufer) D) Aluminum ground ring Answer: C Explanation: A concrete-encased electrode provides a large surface area and low resistance, making it the most effective grounding method for slab-on-grade construction. Question 30 Under Utah R156-55b, what is the minimum number of continuing education hours required for a Residential Master Electrician license renewal? A) 8 hours B) 12 hours C) 16 hours
Master Electrician Ultimate Exam
D) 24 hours Answer: B Explanation: The Utah licensing board requires at least 12 hours of approved continuing education for each renewal period. Question 31 When calculating voltage drop for a feeder supplying a detached workshop, which factor must be considered in addition to conductor resistance? A) Power factor of the load B) Ambient temperature correction factor C) Number of grounding conductors D) Length of the equipment grounding conductor Answer: B Explanation: Ambient temperature affects conductor resistance; NEC Table 310.15(C)(2) provides correction factors that must be applied when calculating voltage drop. Question 32 Which of the following is the correct method for securing NM cable within a stud cavity according to NEC 334.30? A) Every 4 ft and within 12 in of boxes B) Every 6 ft and within 8 in of boxes C) Every 8 ft and within 6 in of boxes D) Every 12 ft and within 4 in of boxes Answer: A Explanation: NEC 334.30 requires NM cable to be secured at intervals not exceeding 4 ft and within 12 in of each outlet, device, or box. Question 33 A residential circuit is protected by a 20-A breaker and supplies a 12-A space heater. What is the maximum permissible length of 12 AWG copper conductors for this circuit without exceeding a 3 % voltage drop? (Assume 120 V, 2-wire run) A) 50 ft B) 75 ft
Master Electrician Ultimate Exam
A) 20-A small-appliance circuit for the kitchen countertops B) 15-A lighting circuit for the living room C) 20-A circuit for the garage receptacles D) 30-A circuit for the electric range Answer: B Explanation: While a lighting circuit is required, NEC does not mandate a specific ampacity for living-room lighting; a 15-A circuit is typical but not mandatory by code language. Question 37 When installing a grounding electrode conductor (GEC) to a ground rod, what is the required method of connection per NEC? A) Twist-on wire connector only B) Listed clamp or exothermic weld C) Soldered joint without a clamp D) Mechanical splice with tape Answer: B Explanation: NEC 250.70(A) requires the GEC to be attached to the grounding electrode using a listed clamp, exothermic weld, or other listed means. Question 38 A residential dryer circuit requires a 30-A breaker. What is the minimum size copper conductor that can be used, assuming 75 °C insulation? A) 10 AWG B) 8 AWG C) 6 AWG D) 4 AWG Answer: B Explanation: Table 310.15(B)(16) shows 8 AWG copper THHN at 75 °C is rated for 55 A, which is sufficient for a 30-A dryer circuit. Question 39 Which of the following is the correct maximum height for a receptacle outlet installed in a kitchen countertop area?
Master Electrician Ultimate Exam
A) 12 in above the countertop B) 18 in above the countertop C) 24 in above the countertop D) No height restriction, as long as it is within 48 in of the countertop Answer: C Explanation: NEC 210.52(C)(1) requires countertop receptacles to be installed so that the outlet face is no more than 20 in above the countertop; however, many jurisdictions allow up to 24 in. The code-specific maximum is 20 in, making Option B the correct answer. Correct Answer: B Explanation: NEC 210.52(C)(1) limits receptacle height to 20 in above the countertop surface. Question 40 In a residential panel, how many spaces are required for the main disconnecting means if the service is a 200 A, 120/240 V split-phase system? A) 1 space B) 2 spaces C) 3 spaces D) 4 spaces Answer: A Explanation: The main disconnect can be a single 200 A breaker occupying one panel space. Question 41 Which NEC article requires that all outdoor receptacles serving a detached garage be GFCI protected? A) Article 210.8(A)(3) B) Article 210.8(B)(2) C) Article 210.8(C)(1) D) Article 210.8(D)(1) Answer: A Explanation: NEC 210.8(A)(3) mandates GFCI protection for outdoor receptacles, including those serving detached garages.
Master Electrician Ultimate Exam
Question 45 Which of the following is a permissible method for protecting NM cable that passes through a wooden stud cavity near a water pipe? A) No protection needed because NM cable is fire-rated B) Install a metal plate covering the cable within 6 in of the pipe C) Use a conduit sleeve the entire length of the cavity D) Replace NM cable with UF cable in that area Answer: B Explanation: NEC 300.4(D) requires protection of NM cable where it passes within 1 ½ in of a water pipe; a metal plate covering the cable within 6 in satisfies this requirement. Question 46 In a residential EV charging installation, what is the required AFCI protection per the 2023 NEC? A) Required for all 240 V circuits B) Required only for the 120 V portion of the circuit C) Not required for EV charging circuits D) Required only if the circuit supplies a dwelling unit bedroom Answer: C Explanation: The 2023 NEC does not require AFCI protection for dedicated EV charging circuits; only GFCI may be required depending on location. Question 47 Which NEC article governs the installation of receptacles in a residential laundry room? A) Article 210.52(F) B) Article 210.11(C)(2) C) Article 210.8(A)(10) D) Article 210.52(E) Answer: A Explanation: NEC 210.52(F) specifies the required number and placement of receptacles in laundry areas.
Master Electrician Ultimate Exam
Question 48 A residential branch circuit supplies a 15-amp, 120-V bathroom fan. The circuit also supplies a receptacle for a hair dryer. What type of protection is required for the receptacle? A) AFCI only B) GFCI only C) Both AFCI and GFCI D) Neither AFCI nor GFCI Answer: B Explanation: NEC 210.8(A)(1) requires all bathroom receptacles to be GFCI-protected, regardless of the load. Question 49 Which of the following is the correct minimum spacing between receptacles on a kitchen countertop? A) No more than 12 in apart B) No more than 24 in apart C) No more than 36 in apart D) No more than 48 in apart Answer: C Explanation: NEC 210.52(C)(1) requires receptacles to be installed so that the distance between any two receptacles does not exceed 24 in measured along the countertop edge; however, the code uses a maximum spacing of 48 in for the overall layout. The correct answer is B. Correct Answer: B Explanation: NEC 210.52(C)(1) sets a maximum spacing of 48 in between countertop receptacles. Question 50 When installing a grounding electrode conductor to a metal water pipe that is not continuous to the service equipment, what additional step must be taken? A) Install a separate GEC to a ground rod B) Use a larger gauge GEC
Master Electrician Ultimate Exam
A) Article 250.92(A) B) Article 250.104(B) C) Article 250.118(C) D) Article 250.122(D) Answer: A Explanation: NEC 250.92(A) specifies the installation of the main bonding jumper in the service equipment. Question 54 In a Utah residential installation, what is the maximum allowable length of a flexible metal conduit (FMC) used as a branch-circuit raceway without a listed support? A) 3 ft B) 6 ft C) 9 ft D) 12 ft Answer: B Explanation: NEC 376.30 allows FMC to be unsupported for up to 6 ft. Question 55 A residential dwelling has a 150 A service. Which of the following grounding electrode conductors is the minimum allowed size? A) 6 AWG copper B) 4 AWG copper C) 2 AWG copper D) 1/0 AWG copper Answer: B Explanation: Table 250.122 indicates a 150 A service requires a minimum of 4 AWG copper for the GEC. Question 56 Which of the following is the correct voltage rating for a Type NM cable used in a Utah single-family home?
Master Electrician Ultimate Exam
A) 120 V
B) 250 V
C) 600 V
D) 1000 V
Answer: C Explanation: Type NM cable is rated for 600 V and is commonly used in residential wiring. Question 57 When installing a receptacle in a residential garage that will serve a 240-V, 30-A welder, what type of receptacle must be used? A) NEMA 5-15R B) NEMA 5-20R C) NEMA 6-15R D) NEMA 6-30R Answer: D Explanation: A 240-V, 30-A welder requires a NEMA 6-30R receptacle. Question 58 Which of the following is the correct minimum burial depth for a metal conduit containing a feeder to a detached accessory building, under a residential driveway? A) 6 in B) 12 in C) 18 in D) 24 in Answer: C Explanation: NEC 300.5(C)(1) requires a minimum of 18 in of cover for metal conduit under a driveway. Question 59 A residential circuit uses a 12-AWG copper conductor with a 90 °C rating but is protected by a 20-A breaker. What is the allowable ampacity for this conductor in the dwelling?
