Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. A fixed light will be allowed to be 30 amp provided the socket is rated ____
duty.
a. Light
b. Medium
c. Heavy
d. Extra Heavy - Correct Answer: c. Heavy
2. From the Skilled Trades Act, Section 7 "Except as otherwise provided in this
article or in subsection (3), and individual other than an individual who is
licensed under this article and ______________ working under the
direction of a holder of an electrical contractors licence, shall not in any
manner undertake to execute any electrical work". - Correct Answer:
...And employed by and...
3. A box with (2) 14/3 NM, one yoke, and a clamp requires a minimum or
_____ cubic inches.
a. 16
b. 18
c. 20
, d. 22 - Correct Answer: c. 20
4. NM Cable in a 2x4x2.5 plastic box will not require a cable clamp if secured
within _____ inches of the box.
a. 8
b. 12
c. 16
d. 20 - Correct Answer: a. 8
5. A box with #10 AWG THHN will require a free space of _____inches.
a. 2
b. 2.25
c. 2.5
d. 3 - Correct Answer: c. 2.5 (See Table 314.16 (B).)
6. A mobile home with 100 amp service will require service conductors of
____ AWG.
a. #4
b. #3
c. #2
d. #1 - Correct Answer: a. #4 (See 550.33 (B) and 310.15 (B)(7).)
7. A service with (4) 4" PVC conduits with (4) 800KCMIL feeder in each will
require a main bonding jumper of what AWG?
a. 4/0
b. 1/0
c. 250 KCMIL
d. 500 KCMIL - Correct Answer: d. 500 KCMIL (See Table 250.102
(C)(1) and Chapter 9 Table 8
, 8. A conduit protecting the grounding electrode conductor shall be bonded to
the ____ at both ends. - Correct Answer: Grounding Electrode
Conductor (See 250.66(E)(1).)
9. A grounding electrode encased in concrete shall be _____ft long and _____
in circumference.
a. 8ft, 5/8"
b. 12ft, 1⁄2"
c. 20ft, 1⁄2"
d. Something else... - Correct Answer: c. 20ft, 1⁄2" (See
250.52(A)(3).)
10.The required outlet for an in-ground pool shall be mounted _____
a. On the wall of a building 21 feet from waters edge
b. On a balcony 8 feet above water level
c. On a support 3 feet from waters edge
d. On a post 6'6" above grade level - Correct Answer: d. On a post
6'6" above grade level (See 680.22(A)(1).)
11.Permanently installed pool motors shall have a cord length of_____
a. 3ft
b. 6ft
c. 12ft
d. 20ft - Correct Answer: a. 3ft (See 680.21 (A)(3).)
12.The conductor feeding a wet-niche pool light will be _____
a. Electrical Metallic Conduit