CALIFORNIA ELECTRICAL CONTRACTOR (C-10)
LICENSE EXAM – ACTUAL EXAM PRACTICE
QUESTIONS AND 100% VERIFIED CORRECT ANSWERS |
COMPLETE EXAM PREP TESTBANK | GUARANTEED
PASS | INSTANT DOWNLOAD PDF
Core Domains
1. Planning and Estimation
2. Rough Wiring
3. Finish Wiring and Trim
4. Troubleshooting, Repair, and Maintenance
5. Photovoltaic and Renewable Energy Systems
6. Safety and California Building Standards (Title 24)
7. Business and Law for Contractors
8. Grounding and Bonding
Table of Contents
, 1. Introduction .................................................................
Page 1
2. Core Domains ................................................................
Page 1
3. Section 1: Questions 1–35
.................................................. Page 2
4. Section 2: Questions 36–70
................................................. Page 8
5. Section 3: Questions 71–105
................................................ Page 14
6. Section 4: Questions 106–140
............................................... Page 20
7. Section 5: Questions 141–200
............................................... Page 26
8. Answer Key Summary
.......................................................... Page 35
Introduction
,The purpose of this assessment is to prepare candidates for
the California C-10 Electrical Contractor License
Examination. This exam evaluates the essential skills and
knowledge required to safely and effectively perform
electrical contracting work in the State of California. The
assessment focuses on a combination of foundational theory,
regulatory compliance with the National Electrical Code
(NEC), and California-specific building standards. Candidates
will face multiple-choice and scenario-based questions that
emphasize practical application, professional decision-
making, and job-site safety. Mastery of these materials
ensures a high level of competency in planning, installing,
and maintaining electrical systems across residential,
commercial, and industrial sectors.
Section 1: Questions 1–35
1. What is the maximum number of 12 AWG THHN
conductors permitted in a 1/2-inch EMT conduit?
A. 6
🔴 B. 9
, C. 12
D. 15
🔵 Explanation: According to the NEC Annex C, Table
C.1, the maximum number of 12 AWG THHN
conductors in a 1/2-inch EMT conduit is 9.
2. A 240-volt single-phase motor has a nameplate rating of
5 HP. What is the full-load current used for sizing
conductors?
A. 20 Amps
🔴 B. 28 Amps
C. 35 Amps
D. 50 Amps
🔵 Explanation: Per NEC Table 430.248, a 5 HP, 230V
single-phase motor is rated at 28 Amps. California code
follows these standard ratings for calculations.
3. Which of the following is the minimum clearance for a
service drop over a residential driveway?
A. 10 feet
🔴 B. 12 feet
C. 15 feet
LICENSE EXAM – ACTUAL EXAM PRACTICE
QUESTIONS AND 100% VERIFIED CORRECT ANSWERS |
COMPLETE EXAM PREP TESTBANK | GUARANTEED
PASS | INSTANT DOWNLOAD PDF
Core Domains
1. Planning and Estimation
2. Rough Wiring
3. Finish Wiring and Trim
4. Troubleshooting, Repair, and Maintenance
5. Photovoltaic and Renewable Energy Systems
6. Safety and California Building Standards (Title 24)
7. Business and Law for Contractors
8. Grounding and Bonding
Table of Contents
, 1. Introduction .................................................................
Page 1
2. Core Domains ................................................................
Page 1
3. Section 1: Questions 1–35
.................................................. Page 2
4. Section 2: Questions 36–70
................................................. Page 8
5. Section 3: Questions 71–105
................................................ Page 14
6. Section 4: Questions 106–140
............................................... Page 20
7. Section 5: Questions 141–200
............................................... Page 26
8. Answer Key Summary
.......................................................... Page 35
Introduction
,The purpose of this assessment is to prepare candidates for
the California C-10 Electrical Contractor License
Examination. This exam evaluates the essential skills and
knowledge required to safely and effectively perform
electrical contracting work in the State of California. The
assessment focuses on a combination of foundational theory,
regulatory compliance with the National Electrical Code
(NEC), and California-specific building standards. Candidates
will face multiple-choice and scenario-based questions that
emphasize practical application, professional decision-
making, and job-site safety. Mastery of these materials
ensures a high level of competency in planning, installing,
and maintaining electrical systems across residential,
commercial, and industrial sectors.
Section 1: Questions 1–35
1. What is the maximum number of 12 AWG THHN
conductors permitted in a 1/2-inch EMT conduit?
A. 6
🔴 B. 9
, C. 12
D. 15
🔵 Explanation: According to the NEC Annex C, Table
C.1, the maximum number of 12 AWG THHN
conductors in a 1/2-inch EMT conduit is 9.
2. A 240-volt single-phase motor has a nameplate rating of
5 HP. What is the full-load current used for sizing
conductors?
A. 20 Amps
🔴 B. 28 Amps
C. 35 Amps
D. 50 Amps
🔵 Explanation: Per NEC Table 430.248, a 5 HP, 230V
single-phase motor is rated at 28 Amps. California code
follows these standard ratings for calculations.
3. Which of the following is the minimum clearance for a
service drop over a residential driveway?
A. 10 feet
🔴 B. 12 feet
C. 15 feet
