Journeyman Electrician’s Exam Cheat Sheet 2026

The 30 highest-yield Journeyman Electrician’s Exam facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the maximum number of disconnects permitted for a single service per NEC 230.71? → Six disconnects
2. What is a "rolling offset" in conduit bending? → An offset that travels in two planes simultaneously, both vertically and horizontally
3. What is the minimum clearance required in front of a panelboard with exposed live parts on one side only (Condition 1) per NEC 110.26(A)(1)? → 36 inches
4. GFCI protection is required for receptacles installed within how many feet of the inside walls of a permanently installed swimming pool at a dwelling unit? → 20 feet
5. For industrial and commercial buildings, the required lighting load is ___ volt amperes per square foot: → 2
6. When a 480 Y/277 volt, three-phase, 4-wire electrical system is used to supply a commercial service with a 400 ampere rating, the service is rated as follows: → 332.5 kVA
7. Per NEC 680.23(A)(1) and (A)(6), a replacement underwater pool luminaire must be: → Listed for use as a swimming pool luminaire and the installation must be watertight
8. There will be a voltage drop of _______ V in a single phase, 240 V circuit with 3 AWG AI conductors powering a 40 A load 300' away from the power panel. → 9.67
9. An outlet box installed in an outdoor location exposed to rain must be: → Listed for use in wet locations
10. In a 3-phase, 4-wire wye system where the line-to-line voltage is 208V, what is the line-to-neutral (phase) voltage? → 120 volts
11. Equipment installed in Class I, Division 1 locations must be listed as: → Explosion-proof or intrinsically safe
12. Per NEC Article 760, what equipment requirement applies to all fire alarm system wiring and devices? → Equipment and wiring must be listed for fire alarm service
13. Per NEC Chapter 9, Table 2, what is the minimum bending radius to the centerline for 2-inch EMT conduit with conductors that do not have a lead sheath? → 12 inches
14. NEC Article 500 classifies hazardous locations using which system? → Division system only
15. Emergency system feeder conductors must have an ampacity sufficient to: → Handle all emergency loads that could be energized simultaneously
16. What is the minimum overhead clearance required for service drop conductors above the water surface of a swimming pool? → 22.5 feet
17. Per NEC 680.22(C), switching devices (light switches) near a pool must be located at least how far horizontally from the inside walls of the pool? → 5 feet
18. Which of the following locations is explicitly prohibited for the installation of overcurrent devices, according to NEC 240.24? → In the bathrooms of dwelling units
19. A circuit's ability to store electrical energy is known as . → Capacitance
20. Where must the LINE terminals of a GFCI receptacle be connected? → To the source conductors coming from the panelboard
21. At _____, secondary tie circuits must feature overcurrent protection. → both ends
22. Class 3 single conductors are not permitted to be any smaller than . → 18 AWG
23. The maximum wattage lamp installed in a luminaire must not exceed: → The wattage marked on the luminaire
24. Using the NEC 220.82 optional calculation method for dwelling units, what percentage applies to all general loads above 10 kVA? → 40%
25. Per NEC Article 725, Class 1 circuit conductors must be protected by overcurrent protection in accordance with: → NEC 725.43 based on conductor ampacity
26. When performing a conduit fill calculation for conductors of different insulation types, what determines each conductor's contribution to the total fill area? → The outer diameter including insulation
27. Each box, cabinet, conduit body, or other termination must have a flexible metal conduit (FMC) secured within ____ of it: → 12 in.
28. According to NEC 314.28(A)(1), what is the minimum box length required for a straight pull when the largest raceway entering the box is 3-inch trade size? → 24 inches
29. The largest electrical trade size that IMC will approve is : → 4 in.
30. What is the resistance of 80 watt Light bulb rated at 120 volts? → 180 ohms