Journeyman Electrician Practice Test – Untimed 50 Questions Answers with Explanation. You can download these MCQs into PDF; press CTRL + P and save it as PDF. Keep in mind that the test will vary from state to state.
Each state will have requirements for you to pass your exam, so to some degree, you must examine the state requirements. There are a total of 50 sample questions and answers. You can check the correct answer during the quiz.
Journeyman Electrician Practice Test
Q1. Which one of the following means shall be identified for an insulated grounded conductor of 4 AWG or larger?
- (A) A continuous black outer finish
- (B) A continuous white outer finish
- (C) Three continuous green stripes
- (D) None of the above
Q2. Overhead conductors for festoon lighting shall not be smaller than 12 AWG unless the conductors are:
- (A) Conductors that are listed for use in damp locations
- (B) Of the type THWN, THHN, or XHHW
- (C) Supported by messenger wire
- (D) No longer than 50ft in length
Q3. A 15-ampere receptacle shall not supply a total cord-and-plug-connected load in excess of:
- (A) 16-amperes
- (B) 25-amperes
- (C) 30-amperes
- (D) 24-amperes
Q4. A conductor installed on the supply side of a service or within a service equipment enclosure(s), or for a separately derived system, that ensures the required electrical conductivity between metal parts required to be electrically connected is a:
- (A) Supply-Side Grounding Conductor
- (B) Bonding Conductor
- (C) Supply-Side Bonding Jumper
- (D) Grounding Electrode Conductor
Q5. In a(n) ___________ system, electrical equipment, wiring, and other electrically conductive material likely to become energized shall be installed in a manner that creates a low-impedance circuit from any point on the wiring system to the electrical supply source to facilitate the operation of overcurrent devices should a second ground fault from a different phase occur on the wiring system.
- (A) Ungrounded
- (B) Grounded
- (C) 3-phase 4-wire
- (D) 1-phase 3-wire
Q6. The earth shall be considered as an effective fault-current path.
- (A) True
- (B) False
Q7. The branch-circuit rating for an appliance that is a continuous load, other than a motor-operated appliance, shall not be less than ________ of the marked rating, or not less than ________ of the marked rating if the branch-circuit device and its assembly are listed for continuous loading at 100% of its rating.
- (A) 125%, 100%
- (B) 100%, 125%
- (C) 83%, 100%
- (D) 100%, 83%
Q8. Exposed, normally non-current-carrying metal parts of fixed equipment supplied by or enclosing conductors or components that are likely to become energized shall be connected to an equipment grounding conductor under which of the following conditions:
- (A) Where equipment operates with any terminal at over 150-volts to ground
- (B) Where supplied by a wiring method that provides an ungrounded conductor for short sections of metal enclosures
- (C) Where within 9ft horizontally of ground or grounded metal objects
- (D) Where located in an isolated wet or damp location
Q9. All pull boxes, junction boxes, and conduit bodies shall be provided with covers compatible with the box or conduit body construction and suitable for the conditions of use. Where used, metal covers shall:
- (A) Be oversized 3/8in to allow for expansion
- (B) Be used on non-metallic conduit bodies of 2in or larger
- (C) Comply with the grounding requirements of 250.110
- (D) Be listed for use in wet environments
Q10. For cord-connected equipment such as room air conditioners, household refrigeration, and freezers, drinking water coolers, and beverage dispensers, a separable connector or a(n) ______________ shall be permitted to serve as the disconnecting means.
- (A) None of these
- (B) Toggle switch
- (C) Weatherproof cord cap
- (D) Attachment plug and receptacle
Q11. Receptacles shall be mounted in identified boxes or assemblies. The boxes or assemblies shall be securely fastened unless otherwise permitted elsewhere in this code. Screws to attach receptacles to a box shall be of the type provided with a listed receptacle or shall be machine screws having ______ threads per inch:
- (A) 18
- (B) 32
- (C) 21
- (D) 20
Q12. Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets unless located within how many inches of the wall?
- (A) 6 inches
- (B) 12 inches
- (C) 18 inches
- (D) 24 inches
Q13. A receptacle outlet shall be installed at each countertop and work surface that is ____ or wider.
- (A) 6 inches
- (B) 12 inches
- (C) 18 inches
- (D) 36 inches
Q14. At least ____ receptacle(s) outlet shall be installed in bathrooms within ____ feet of the outside edge of each basin.
- (A) 2, 3
- (B) 1, 2
- (C) 1, 6
- (D) 1, 3
Q15. A single-phase 3-wire 200-amp service is constructed at a residence. What size copper grounding electrode conductor needs to be installed on this service?
- (A) #4 copper
- (B) #2 copper
- (C) #6 copper
- (D) #8 copper
Q16. When installing conductors in a rigid metal conduit buried under 3 inches of concrete, to what depth does this conduit need to be buried?
- (A) 12 inches
- (B) 6 inches
- (C) 18 inches
- (D) 24 inches
Q17. Under which condition shall raceways be used as a means of support for other raceways?
- (A) Where the raceway or means of support is identified as a means of support
- (B) Where the raceway is used to support boxes or conduit bodies under [314.23]
- (C) Both of these
- (D) Neither of these
Q18. Switches or circuit breakers shall not disconnect the grounded conductor of a circuit.
- (A) True
- (B) False
Q19. Snap switches rated 20 amperes or less directly connected to aluminum conductors shall be listed and marked ____.
- (A) ALM/CU
- (B) CO/ALR
- (C) For use in wet environments
- (D) Aluminum conductors only
Q20. What type of load shall be considered for fixed electric space heating equipment and motors?
- (A) Inductive
- (B) Intermittent
- (C) Non-continuous
- (D) Continuous
Q21. In a dwelling unit, which locations are NOT required to be protected by an arc-fault circuit interrupter?
- (A) Bedrooms
- (B) Garages
- (C) Laundry areas
- (D) Hallways
Q22. GFCI protection must be provided for outlets that supply dishwashers installed in dwelling unit locations.
- (A) True
- (B) False
Q23. In a bathroom where receptacles are installed within 6 feet from the ____ edge of the bowl of a sink, they must be GFCI protected.
- (A) Bottom outside
- (B) Top outside
- (C) Point drawn horizontally at the center of the basin
- (D) Top inside
Q24. A 1/0 copper grounding electrode conductor is appropriate for what size ungrounded service entrance conductors?
- (A) 2/0 copper
- (B) 3/0 copper
- (C) Over 350 – 600 copper
- (D) Over 3/0 – 350 copper
Q25. No parts of cord-connected luminaires, chain, cable, or cord-suspended luminaires, lighting track, pendants, or ceiling-suspended (paddle) fans shall be located within a zone measuring ____ horizontally and ____ vertically from the top of the bathtub rim or shower stall threshold.
- (A) 3 feet, 8 feet
- (B) 4 feet, 8 feet
- (C) 2 feet, 6 feet
- (D) 3 feet, 6 feet
Q26. Any insulated cable 0-750 volts to ground, supported on and cabled together with a solidly grounded bare messenger or solidly grounded neutral conductor must maintain a clearance of ____ feet in any direction from the water level, edge of water surface, base of diving platform, or permanently anchored raft.
- (A) 6.9
- (B) 18
- (C) 25
- (D) 22.5
Q27. The ampacity of the branch circuit conductors and the rating or setting of overcurrent protective devices shall not be less than ____ of the total nameplate rated load.
- (A) 100%
- (B) 83%
- (C) 125%
- (D) 115%
Q28. Temporary electric power and lighting installations shall be permitted for a period not to exceed ____ for holiday decorative lighting and similar purposes.
- (A) 30 days
- (B) 90 days
- (C) 60 days
- (D) 120 days
Q29. On a 4-wire, delta connected system where the midpoint of one phase winding is grounded, only the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that is ____ in color, or by other effective means.
- (A) Yellow
- (B) Orange
- (C) Purple
- (D) White
Q30. Exposed live parts on one side of the working space and grounded parts on the other side of the working space must have ____ of clearance in a 277-volt to ground environment.
- (A) 3 feet 6 inches
- (B) 3 feet
- (C) 4 feet
- (D) 2 feet 6 inches
Q31. Which outdoor enclosure types are all approved for wind-blown dust applications?
- (A) 3, 3s, 3rx
- (B) 3r, 3s, 3rx
- (C) 3sx, 3r
- (D) 3s, 3x, 3sx
Q32. For devices with screw shells, the terminal for the ____ conductor shall be connected to the screw shell.
- (A) Grounded
- (B) Ungrounded
- (C) Grounding
- (D) Equipment grounding
Q33. A conducting object through which a direct connection to earth is established is termed a(n) ____.
- (A) Equipment grounding electrode conductor
- (B) Grounded conductor
- (C) Grounding electrode
- (D) Ground bus bar
Q34. It is appropriate to use the “optional feeder and service load calculation” method to a dwelling unit having the total connected load served by a ____ or ____ set of 3-wire service or feeder conductors with an ampacity of 100-amps or greater.
- (A) 120/240-volt, 208Y/120-volt
- (B) 120/240-volt, 240∆/120-volt
- (C) 120/208-volt, 240∆/208-volt
- (D) 277/480-volt, 208Y/120-volt
Q35. In a building supplied by a feeder(s), two or three single-pole switches or breakers capable of individual operation shall be permitted on multiwire circuits, one pole for each ungrounded conductor, as one multipole disconnect, provided they are equipped with identified handle ties or a master handle to disconnect all ungrounded conductors _______.
- (A) So long as each multiwire branch circuit is separately identified
- (B) In branch circuits with a nominal voltage of under 600 volts between conductors
- (C) With a minimum of 2 grounded conductors supplying a branch circuit fed from the enclosure thereafter
- (D) With no more than 6 operations of the hand
Q36. Which of these are standard ampere ratings for fuses and inverse time circuit breakers?
- (A) 15, 20, 60, 75
- (B) 80, 90, 350, 110
- (C) 20, 25, 115, 155
- (D) 300, 400, 550, 1000
Q37. The operating handle of a circuit breaker shall be permitted to be accessible without opening a door or cover.
- (A) True
- (B) False
Q38. Exposed structural metal that is interconnected to form a metal building frame and is not intentionally grounded or bonded and is likely to become energized shall be bonded to which of the following:
- (A) Grounded conductor at the service
- (B) Disconnecting means for buildings or structures supplied by a feeder or branch circuit
- (C) One or more grounding electrodes used, if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size
- (D) All of these
Q39. In overhead services not in excess of 600 volts, nominal, the vertical clearance of final spans above, or within 3 feet measured horizontally of platforms, projections, or surfaces that will permit personal contact shall maintain a minimum clearance of:
- (A) 10 feet from final grade above areas or sidewalks accessible only to pedestrians
- (B) 12 feet over commercial property and parking areas subject to truck traffic where the voltage does not exceed 300 volts to ground
- (C) 15 feet for those areas listed in the 10 feet classification where the voltage exceeds 300 volts to ground
- (D) None of these
Q40. An enclosure designed for surface mounting that has swinging doors or covers secured directly to and telescoping with the walls of the enclosure is:
- (A) A panelboard
- (B) A switchgear
- (C) A cutout box
- (D) A cabinet
Q41. A grounded circuit conductor shall not be used for grounding non-current-carrying metal parts of equipment on the load side of the service disconnecting means or on the load side of a separately derived system disconnecting means or the overcurrent devices for a separately derived system not having a main disconnecting means, except for which of the following:
- (A) The frames of ranges, wall-mounted ovens, countertop-mounted cooking units, and clothes dryers under the conditions permitted for existing installations by 250.140
- (B) 125-volt 20-amp receptacles with ground-fault circuit interruption in multifamily dwellings
- (C) 125-volt 15-amp isolated ground receptacles in healthcare occupancies
- (D) Meter enclosures where service ground-fault protection is installed
Q42. Luminaires shall be constructed, installed, or equipped with shades or guards so that combustible material is not subjected to temperatures in excess of:
- (A) 94°C (201°F)
- (B) 75°C (167°F)
- (C) 60°C (140°F)
- (D) 40°C (104°F)
Q43. The ampacity of UF cable shall be that of:
- (A) 75°C
- (B) 60°C
- (C) 90°C
- (D) 104°C
Q44. The supply side bonding jumper for a 240-volt single-phase service fed with (2) 300 kcmil Aluminum ungrounded conductors should be what size:
- (A) 2 copper
- (B) 6 copper
- (C) 1/0 copper
- (D) 4 copper
Q45. For a one-family dwelling with a service rated 400-amps, the service conductors supplying the entire load associated with a one-family dwelling, or the service conductors supplying the entire load associated with an individual dwelling unit in a two-family or multifamily dwelling, shall be permitted to have an ampacity not less than __________ of the service rating.
- (A) 100%
- (B) 125%
- (C) 115%
- (D) 83%
Q46. The minimum sized copper equipment grounding conductor required to ground equipment served by a 40-ampere rated branch-circuit is __________.
- (A) 14 AWG
- (B) 12 AWG
- (C) 10 AWG
- (D) 8 AWG
Q47. Receptacles installed in a kitchen to serve countertop surfaces shall be supplied by not fewer than three small-appliance branch circuits.
- (A) True
- (B) False
Q48. In a single-family dwelling, the rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed ______ of the branch-circuit ampere rating.
- (A) 125%
- (B) 100%
- (C) 80%
- (D) 83%
Q49. All 15- and 20-ampere, 125- and 250-volt non-locking type receptacles in dwelling units shall be listed tamper-resistant receptacles.
- (A) True
- (B) False
Q50. Multiwire branch circuits shall supply only ___________________.
- (A) Line-to-ground loads
- (B) Line-to-neutral loads
- (C) Line-to-line loads
- (D) Three-phase loads
See also:
- Back to Free Journeyman Electrician Practice Test 2024 Online Test + PDF
- Journeyman Electrician Practice Test Untimed (50 MCQs)
- Journeyman Electrician Exam Practice Test – 35 Minutes Time Limit