Practice test

California Journeyman Electrician Practice Test

Free California journeyman electrician practice test with 20 NEC-based questions. Covers grounding, load calculations, and wiring methods. Instant scoring.

These questions are for study practice only and are not official exam questions.

Question 1

1

An isolated-ground receptacle is installed to reduce electrical noise for sensitive equipment. How must its insulated equipment grounding conductor be run?

Question 2

2

What are the renewal requirements for a California General Electrician certification?

Question 3

3

Which edition of the electrical code took effect statewide in California on January 1, 2026?

Question 4

4

A dwelling has a 5 kW air-conditioning load and a 10 kW electric space-heating load that never operate at the same time. How are these handled in the service calculation?

Question 5

5

How many on-the-job hours are required for California's Residential Electrician certification?

Question 6

6

A detached garage is supplied by a feeder from the house. Under the current NEC, how are the neutral and grounding conductors handled at the garage panel?

Question 7

7

How many hours of qualifying work experience are required to sit for the California General Electrician certification exam?

Question 8

8

In a standard dwelling load calculation, what unit load does the NEC assign for general lighting and receptacles?

Question 9

9

Which of these dwelling receptacle locations requires GFCI protection under NEC 210.8?

Question 10

10

Using the NEC table for equipment grounding conductors, what is the minimum size copper EGC for a branch circuit protected by a 60-ampere breaker?

Question 11

11

What load must be included in a dwelling service calculation for the required laundry branch circuit?

Question 12

12

Under the NEC rule for dwelling receptacle spacing, no point along the floor line of a wall may be farther than what distance from a receptacle outlet?

Question 13

13

A service is supplied by 500 kcmil copper conductors. Per the NEC table for grounding electrode conductors, what is the minimum copper GEC to a metal water pipe electrode?

Question 14

14

A single continuous-duty motor has a full-load current of 28 amperes from the NEC motor tables. What is the minimum ampacity of its branch-circuit conductors?

Question 15

15

Circuit conductors are upsized from 12 AWG to 8 AWG copper to limit voltage drop on a long 20-ampere run. What does the NEC require for the equipment grounding conductor?

Question 16

16

A 4,500-watt, 240-volt storage water heater is installed in a dwelling. What is its full-load current draw?

Question 17

17

Per NEC 250.4, why is the earth itself NOT permitted to serve as the effective ground-fault current path?

Question 18

18

Under the NEC optional method for a single dwelling, how is the general load (lighting, appliances, and similar loads) converted to a demand load?

Question 19

19

A candidate fails the California General Electrician certification exam. What do the state rules provide for retesting?

Question 20

20

A building has a metal water piping system that is likely to become energized. What does NEC Article 250 require?

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