CA C-7 Low Voltage Contractor Exam Prep:
Practice Questions and Study Guides 2026
1. 1. All exposed non-current carrying metal parts of an d. both a and c
information technology system
645.15
a. shall be bonded to the equipment grounding con-
ductor
b. shall be left alone for IT to fix it
c. shall comply with article 250
d. both a and c
2. Cables used to connect loudspeakers to each other or d. shall comply with Article
to an amplifier 722.
a. shall comply with Article 440 640.21 (B)
b. shall comply with Article 820
c. shall comply with Article 625
d. shall comply with Article 722
3. Outdoor antennas and lead-in conductors from an an- d. any of the these
tenna to a building shall
810.13
a. not cross over open conductors of electric light or
power circuits
b. be such as to provide a clearance of at least 600 mm
(2 ft)
c. be kept well away from all such circuits so as to avoid
the possibility of accidental contact
d. any of the these
4. NPLFA circuit overcurrent protection d. a and b
a. shall not exceed 7 amperes for 18 AWG conductors 760.43
b. shall not exceed 10 amperes for 16 AWG conductors
, CA C-7 Low Voltage Contractor Exam Prep:
Practice Questions and Study Guides 2026
c. shall not exceed 15 amperes for 14 AWG conductor
d. a and b
5. Different intrinsically safe circuit conductors shall be a. with insulation that is
separated from each other by one of the following 0.01 in.
means:
504.30(B)(2)
a. with insulation that is 0.01 in.
b. a minimum of .25mm
c. with a metal partition of .0359in thick
d. in ducts separated by at least 4 in
6. Abandoned Supply Circuits and Interconnecting Ca- c. accessible cables shall
bles be removed unless con-
tained in a raceway
a. left for IT techs
b. must be marked for future use 645.5(G)
c. accessible cables shall be removed unless contained
in a raceway
d. all of the these
7. Branch circuits for lighting systems in Article 311 shall a. 20-ampere branch cir-
be supplied from a maximum cuit
a. 20-ampere branch circuit 411.8
b. 10-ampere branch circuit
c. 25-ampere branch circuit
d. 15-ampere branch circuit
8. Class 1 circuits shall be identified at terminal and junc- d. both a and b
tion locations
724.24, 724.30
a. in a manner that prevents unintentional interfer-
, CA C-7 Low Voltage Contractor Exam Prep:
Practice Questions and Study Guides 2026
ence with other circuits during testing and servicing
b. shall be installed in a neat and workmanlike manner
c. in a manner that's accessible to the public for trans-
parency
d. both a and b
9. Class 2 and Class 3 Power-Limited Circuits are in what d. 725
article of the 2023 NEC?
725
a. 720
b. 727
c. 724
d. 725
10. Class 1 Power-Limited Circuits and Class 1 Power-Lim- c. 724
ited Remote-Control and Signaling Circuits are in what
article of the 2023 NEC? 724
a. 720
b. 727
c. 724
d. 725
11. As appropriate for the services provided, the output d. All the above
circuits derived from a network-powered broadband
communications system's network interface unit (NIU) 800.3(A)
or from a premises-powered broadband communica-
tions system's network terminal shall comply with the
requirements of the following:
a. Installations of Class 2 and Class 3 circuits — Part II
of Article 725 and Parts I and II of Article 722
b. Installations of power-limited fire alarm circuits —
Practice Questions and Study Guides 2026
1. 1. All exposed non-current carrying metal parts of an d. both a and c
information technology system
645.15
a. shall be bonded to the equipment grounding con-
ductor
b. shall be left alone for IT to fix it
c. shall comply with article 250
d. both a and c
2. Cables used to connect loudspeakers to each other or d. shall comply with Article
to an amplifier 722.
a. shall comply with Article 440 640.21 (B)
b. shall comply with Article 820
c. shall comply with Article 625
d. shall comply with Article 722
3. Outdoor antennas and lead-in conductors from an an- d. any of the these
tenna to a building shall
810.13
a. not cross over open conductors of electric light or
power circuits
b. be such as to provide a clearance of at least 600 mm
(2 ft)
c. be kept well away from all such circuits so as to avoid
the possibility of accidental contact
d. any of the these
4. NPLFA circuit overcurrent protection d. a and b
a. shall not exceed 7 amperes for 18 AWG conductors 760.43
b. shall not exceed 10 amperes for 16 AWG conductors
, CA C-7 Low Voltage Contractor Exam Prep:
Practice Questions and Study Guides 2026
c. shall not exceed 15 amperes for 14 AWG conductor
d. a and b
5. Different intrinsically safe circuit conductors shall be a. with insulation that is
separated from each other by one of the following 0.01 in.
means:
504.30(B)(2)
a. with insulation that is 0.01 in.
b. a minimum of .25mm
c. with a metal partition of .0359in thick
d. in ducts separated by at least 4 in
6. Abandoned Supply Circuits and Interconnecting Ca- c. accessible cables shall
bles be removed unless con-
tained in a raceway
a. left for IT techs
b. must be marked for future use 645.5(G)
c. accessible cables shall be removed unless contained
in a raceway
d. all of the these
7. Branch circuits for lighting systems in Article 311 shall a. 20-ampere branch cir-
be supplied from a maximum cuit
a. 20-ampere branch circuit 411.8
b. 10-ampere branch circuit
c. 25-ampere branch circuit
d. 15-ampere branch circuit
8. Class 1 circuits shall be identified at terminal and junc- d. both a and b
tion locations
724.24, 724.30
a. in a manner that prevents unintentional interfer-
, CA C-7 Low Voltage Contractor Exam Prep:
Practice Questions and Study Guides 2026
ence with other circuits during testing and servicing
b. shall be installed in a neat and workmanlike manner
c. in a manner that's accessible to the public for trans-
parency
d. both a and b
9. Class 2 and Class 3 Power-Limited Circuits are in what d. 725
article of the 2023 NEC?
725
a. 720
b. 727
c. 724
d. 725
10. Class 1 Power-Limited Circuits and Class 1 Power-Lim- c. 724
ited Remote-Control and Signaling Circuits are in what
article of the 2023 NEC? 724
a. 720
b. 727
c. 724
d. 725
11. As appropriate for the services provided, the output d. All the above
circuits derived from a network-powered broadband
communications system's network interface unit (NIU) 800.3(A)
or from a premises-powered broadband communica-
tions system's network terminal shall comply with the
requirements of the following:
a. Installations of Class 2 and Class 3 circuits — Part II
of Article 725 and Parts I and II of Article 722
b. Installations of power-limited fire alarm circuits —
