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JOURNEYMAN ELECTRICIAN EXAM 2026-
QUESTIONS AND ANSWERS GRADED A+
What table sizes bonding jumpers for for AC systems? 250.102(C)(1) The NEC defines continuous load to be a load where max current on the circuit continues for at least how many hours? Three To use the adjustment factors in table 310.15(B)(3)(A), you must have greater than how many current carrying conductors in a raceway? Greater than three Where in the NEC codebook would you find EMT sizes for a given size and number of conductors? Annex C, Table C. Section 210.20(A) states that the over current protection for branch circuits including continuous loads must be greater than 100% of the noncontinuous plus ____ of the continuous load. 125%
Liquidtight Flexible Metal Conduit shall be fastened within of each box or other conduit termination Twelve inches 314.28(A)(1) states that straight pulls in pull boxes with conductors size 4 AWG or larger, box length should be greater than or equal to times the trade diameter of the largest conduit entering box. Eight Chapter 9 note 4 states conduit nipples less than 24 inches can fill to a max of their cross sectional area 60 percent Table 348.22 gives the max number of insulated conductors in size _______ FMC? 3/8 (trade size) Guest rooms of hotels, motels, & sleeping rooms in dorms need a MIN or _____ general purpose receptacles installed that are readily accessible? Two
Class _____ locations are those in which flammable gases, flammable liquid produced vapors, or combustible liquid produced vapors are present that are explodable. Class 1 Class ____ locations are those that are hazardous because of combustible dust Class II Conductors with _______ Insulation have a greater ampacity when used in a dry location compared to when used in a wet location THHW When calculating total load for buildings and finding minimum branch circuit load, what must be factored into the volt amps for an exterior electric sign? Demand load (1.25) Table C.11 and C.11(A) show conductor numbers for size for schedule 40 PVC, what is the difference in charts? Compact vs stranded conductors 332.30 states that type MI cable shall be supported at intervals of at least how many feet?
Six feet What table sizes equipment grounding conductors for specific over current devices?
Wye is another term for what kind of systems? Three phase What is the equation for voltage drop? VD=2KID/CM In the voltage drop equation, what is the value CM, and where is it found in the NEC codebook? Circular mile, chapter 9, table 8 Conductors installed under at least _______ inches of concrete are considered by NEC Section 230.6 to be outside the building. 2 inches
30 inches Section 210.11(C)(2) states at least one additional _____ amp circuit shall be provided to supply the laundry outlet in the laundry room 20 ampere What section of the NEC discusses corrosion protection?
300.6 says that where corrosion protection is necessary and the conduit is threaded in the field, the threads shall be coated with what? An electrically conductive, corrosion resistant compound 110.26 (E) discusses the space equal to the width and depth of the equipment and extending from the floor to a height of six feet above the equipment or to the structural ceiling. What is this called? Dedicated electrical space For single phase dwelling services, when sizing conductors, 100-400 amps, what do you multiply your ampacity by to derate? 83 percent
For stationary motors of 2 hp or less, and 300 volts or less, a general use switch having an ampere rating of _____ the flc rating of the motor is permitted to be used 2 times 240.22 states no over current device shall be connected in series with any conductors The overcurrent device opens all conductors of the circuit, including the grounded and is designed so no pole can operate independently. 314.72(E) states that a suitable cover to cover an underground box is considered to weigh what and shall have what written on it? 100 pounds "Danger - High Voltage - Keep out" When an industrial control panel is supplied from a 3 phase, 4 wire, delta connected electrical system, the phase having the higher voltage to ground is labeled the "B" phase Where in the codebook would you find info about the minimum clearance for conductors passing over a public driveway? 225.18(4) Outside branch circuits and feeders
In general, when current carrying conductors are installed in parallel, the paralleled conductors in each phase shall be what two things? The same size in circular mil area and have the same insulation type Any motors that supply a motor used in a short time, intermittent, or varying duty application are permitted to have an ampacity of not less than the percentage values on table _______ and called what? 430.22(E) Duty Cycle Service For branch circuit, short circuit and ground fault protection of motors, what table gives percentages of flc for sizing of fuses and breakers?
If the dual element fuse sizing for a motor branch circuit is not big enough to cover starting current of the motor, what is the maximum you can multiply the flc by what? What section is this found? 225 percent, 430.52(C)(1) Ex. For motors feeder conductor sizing supplying two or more motors, when choosing the protective device what two steps do you take?
- add largest of device provided for the motor in the group plus
- sum of all flc of other motors of the group
In addition to overcurrent protection, Most continuous duty electric motors rated more than 1 hp, and motors automatically started having a rating of 1 hp or less are required to be protected by what devices? What section for sizing? Overloads, 430. What table gives conductor application and insulations? 310.104(A) like dry and damp locations What is the demand factor for conductors amperage in service entrances? 83% In noncombustible walls or ceilings, the front edge of an outlet box may be set back of the finished surface not more than: 1/4 in. For single phase services and feeders 100-400 amps on one family dwellings or individual dwellings, the conductors shall be permitted to have an ampacity not less than _____ percent of the service rating. 83 percent
Receptacles incorporating an isolated grounding conductor connection intended for the reduction of electrical noise, shall be identified by a/an_______located on the face of the receptacle red dot For the purpose of determining conductor fill in a device box, the NEC mandates a switch to be counted as equal to two (2) conductors. The volume allowance for the two (2) conductors. The volume allowance for the two conductors shall be based on the: Largest size wire in the box Where in the NEC codebook would you find information regarding Cables, Raceways, or Boxes installed in or Under Roof Decking? 300.4(E) Which section of the NEC codebook contains conductors for general wiring charts? 310.15(B)(16) When calculating the branch circuit load for a counter mounted cooking unit and not more than two wall mounted ovens that are supplied from a single branch circuit and located in the same room, 220.55 note 4 states that you can do what? Add the two nameplate ratings and treat it as one range
When sizing type NM cable conductors in 220.15(B)(16), what temperature rating column do you always use? 60 degrees celsius Direct and alternating current differ in that alternating current reverses at intervals Luminaires containing a metal halide lamp (other than a thick glass PAR lamp) shall be provided with a containment barrier that encloses the lamp, or shall be provided with a containment barrier that encloses the lamp, or shall be provided with a physical means that only allow the use of a lamp that is type O The ampacity adjustment factors for conductors in section 310.15(B)(3)(a) of the NEC are not required to be applied when the conductors are installed in a metal wireway unless the number of current carrying conductors within the wireway exceeds 30 Ceiling suspended (paddle) fans weighing MORE than ____ pounds shall be supported independently of the outlet box
250.97 Exception 2 in the NEC says for circuits over _____ to ground, the electrical continuity of RMC that contain any conductor, other than service conductors, shall be isured with 2 locknuts, one inside and one outside of boxes and cabinets 250 volts An enclosure that contains a device (s) shall have a weight supported by a single conduit that does not exceed ________ lbs. 314.23(f)(e) 20 lbs What is the difference between RHW and RHW-2? 75 degrees celsius maximum operating temperature vs. 90 Repairing noncombustible surfaces that are broken or incomplete around boxes employing flush type cover or faceplates shall be repaired so there will be no gaps or open spaces greater than ____ at the edge of the box 1/8 inch Where can you find construction specifications for recessed luminaries installed in suspended ceilings?
410. 36(B)
