Courtesy of www.MikeHolt.com.
All questions and answers are based on the 2023 NEC.
Q1: Each outlet installed for the purpose of supplying EVSE (electric vehicle supply equipment) greater than _____ or 120V shall be supplied by an individual branch circuit.
a) 12A
b) 16A
c) 18A
d) 20A
Q2: A grounded conductor shall not be connected to normally non-current-carrying metal parts of equipment on the _____ side of the system bonding jumper of a separately derived system except as otherwise permitted.
a) supply
b) grounded
c) high-voltage
d) load
Q3: MC cable shall be supported and secured by staples; cable ties _____ for securement and support; straps, hangers, or similar fittings; or other approved means designed and installed so as not to damage the cable.
a) listed and identified
b) marked or labeled
c) installed and approved
d) any of these
Q4: Cables and conductors of Class 2 and Class 3 circuits _____ be placed with conductors of electric light, power, Class 1, nonpower-limited fire alarm circuits, and medium power network-powered broadband communications circuits.
a) shall be permitted to
b) shall not
c) shall
d) shall be required to
Q5: Buildings with PV systems having rapid shutdown shall have a permanent label located at each service equipment location to which the PV systems are connected or at an approved readily visible location and shall indicate the location of _____.
a) overcurrent protection devices
b) utility connections
c) non-utility power sources
d) rapid shutdown initiation devices
Q6: Where dwelling units are supplied by a feeder the required SPD shall have a nominal discharge current rating (In) of not less than _____.
a) 5kA
b) 7.50kA
c) 10kA
d) the available fault current
Answers:
Q1: b) 16A
Section 625.40 states, "Each outlet installed for the purpose of supplying EVSE greater than 16A or 120V shall be supplied by an individual branch circuit."
Q2: d) load
Per Sec. 250.30(A): "A grounded conductor shall not be connected to normally non-current-carrying metal parts of equipment, be connected to equipment grounding conductors, or be reconnected to ground on the load side of the system bonding jumper."
Q3: a) listed and identified
According to Sec. 330.30(A), "MC cable shall be supported and secured by staples; cable ties listed and identified for securement and support; straps, hangers, or similar fittings; or other approved means designed and installed so as not to damage the cable."
Q4: b) shall not
Per Sec. 725.136(A): Cables and conductors of Class 2 and Class 3 circuits shall not be placed with conductors of electric light, power, Class 1, non-power-limited fire alarm circuits, and medium power network-powered broadband communications circuits.
Q5: d) rapid shutdown initiation devices
Section 690.12(D) states, "Buildings with PV systems shall have a permanent label located at each service equipment location to which the PV systems are connected or at an approved readily visible location and shall indicate the location of rapid shutdown initiation devices."
Q6: c) 10kA
As confirmed by Sec. 215.18(E), "SPDs shall have a nominal discharge current rating (In) of not less than 10kA."
These materials are provided by Mike Holt Enterprises in Leesburg, Fla. To view Code training materials offered by this company, visit www.mikeholt.com/code.
About the Author
Mike Holt
Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.