EVCS
EVSE provides DC power to the electric vehicle charging port.
False
The EV's power acceptance rate should not be considered when making EVSE purchasing decisions.
False
A battery electric vehicle requires external charging but does not rely on an internal combustion generator for extended range.
True
Conductor insulation does not have an effect on voltage drop.
True
The NECA 413-2012 Standard is the only ANSI-approved standard for EVSE installation and maintenance.
True
The first EV chargers were external and supplied DC current directly to the vehicle's batteries.
True
The maximum amount of current a conductor can carry under the conditions of use without exceeding its temperature rating is found using the calculation methods based in Article 310.
True
The state of charge is the available capacity of the battery, expressed as a percentage.
True
When calculating the voltage drop on a conductor of a given length, the following values must be considered: conductor material, conductor length, and conductor operating temperature.
True
Wireless charging is more expensive than coupled EVSE.
True
Installation of EVSE at an existing building is worth as many as ? LEEDpoints.
a. 1 b. 3 c. 11 d. 15
What is the maximum voltage drop recommended for branch circuits and feeders/electrical systems in the National Electrical Code (NEC)?
a. 1% branch / 2% feeder/system b. 2% branch / 4% feeder/system c. 3% branch / 5% feeder/system d. It is recommended that no voltage drop be allowed in the system.
A Level II EVSE with a rating of 32 amperes at 208 volts is installed. What is the minimum size copper equipment grounding conductor required to serve the installation?
a. 10 AWG b. 8 AWG c. 6 AWG d. 4 AWG
Two Level II EVSE circuits are installed in the same PVC conduit. Each EVSE is served by a 40-ampere circuit at 240 volts with an EGC run along with the circuits. What size copper EGC is required for this installation?
a. 10 AWG b. 8 AWG c. 6 AWG d. 4 AWG
What is the minimum size XHHW-2 copper conductor permitted to supply a Level II EVSE that has a 30-ampere current rating, assuming 75° terminations?
a. 12 AWG b. 10 AWG c. 8 AWG d. 6 AWG
What is the general lighting load of a store with an area of 12,000 square feet?
a. 12,000 VA b. 36,000 VA c. 45,000 VA d. 48,000 VA
Calculate the voltage drop on a single-phase circuit with 32 amperes of load, a distance of 320 feet from the load to the panelboard, and served by 8 AWG copper THHN conductors.
a. 13 V b. 14 V c. 15 V d. 16 V
The first electric vehicle can be traced back to ? .
a. 1832 b. 1943 c. 1967 d. 2002
Additional EVSEs are to be added to an existing 120/208-volt, 3-phase, 4-wire, 600-ampere service with 220 amperes of non-continuous load and 172 amperes of continuous load. The EVSEs each draw 32 amperes. How many new EVSEs can be added to the service? (Note: Use 1.732 for the square root of 3.)
a. 2 b. 3 c. 6 d. 9
Leadership in Energy and Environmental Design (LEED) has ? certification levels.
a. 2 b. 4 c. 6 d. 8
Level 2 EVSEs with a rating of 6.6 kilowatts can supply ? of charge current when operating at 220 VAC.
a. 20 A b. 30 A c. 40 A d. 50 A
Three single-phase Level II EVSE are distributed equally on a 3-phase, 4-wire system and each EVSE draws 24 amperes. What is the line current on each phase? (Note: Use 1.732 for the square root of 3.)
a. 24 A b. 41.56 A c. 52.6 A d. 64.33 A
What is the minimum copper THHN feeder size for 12 EVSEs rated at 24 amperes on a 3-phase, 4-wire, 120/208-volt system, assuming four EVSE per phase? (Note: Use 1.732 for the square root of 3.)
a. 250 kcmil b. 350 kcmil c. 4/0 AWG d. 2/0 AWG
Calculate the following correct copper conductor size so that the branch circuit has a maximum voltage drop of 2%. The load on the circuit is 32 amperes, the distance from the load to the panelboard is 400 feet, and the circuit is 208 volts, single-phase.
a. 3 AWG b. 1 AWG c. 1/0 AWG d. 250 kcmil
An office building has 22 kilovolt-amperes of lighting that is at continuous operation. It also has 35 20-ampere, 120-volt duplex receptacles. Both loads are fed from a 300-ampere panelboard operating at 120/240 volts, single phase. How much more continuous load can be added to the service?
a. 30,560 VA b. 33,800 VA c. 38,200 VA d. 72,000 VA
What is the minimum branch circuit size for a Level II EVSE with a 32-ampere current rating?
a. 32 A b. 35 A c. 40 A d. 55 A
An existing 400-ampere, 120/208-volt, 3-phase, 4-wire service has 30 kilovolt-amperes of non-continuous load and 58 kilovolt-amperes of continuous load. How much more continuous load can be added to the service? (Note: Use 1.732 for the square root of 3.)
a. 33,281.92 VA b. 41,436 VA c. 102.5 kVA d. 143.93 kVA
Fleet vehicle battery capacity has reached upward of ? for heavy duty vehicles.
a. 500 Wh b. 10 kWh c. 550 kWh d. none of the above
The CHAdeMO V1.0 Standard has charging power up to ? at ? , up to ? .
a. 62.5 kW / 500 VDC / 125 A b. 350 kW / 480 VDC / 80 A c. 400 kW / 1,000 VDC / 400 A d. 1 MW / 2,200 VDC / 800 A
A 32,000 square foot office building has 120 20-ampere, 120-volt duplex receptacle outlets. What is the branch circuit receptacle load?
a. 9,600 VA b. 21,600 VA c. 28,000 VA d. 32,000 VA
Nine Level II EVSEs are installed on a 3-phase, 4-wire 120/208-volt system. Each EVSE is 208/240 volts, single-phase and rated at 24 amperes. What is the minimum ampacity of the copper feeder conductors required to serve the installation?
a. 90 A b. 156 A c. 167 A d. 180 A
Electric vehicle supply equipment (EVSE) provides which of the following safety features?
a. A continuously energized output b. GFCI protection c. Hardware fault detection d. Both b. and c.
A partial zero emissions vehicle (PZEV) is defined as which of the following?
a. A gas-engine vehicle that has zero evaporative emissions from its fuel system b. A plug-in electric vehicle c. A vehicle with a hybrid gas-electric drive train d. An electric vehicle that only has provisions for wireless charging
Which of the following acronyms represents the level of charge present in an EV battery?
a. ANSI b. EVA c. NFPA d. SOC
Charging methods for battery electric buses include which of the following?
a. Above/below bus charging wireless charging b. Plug-in charging c. Wireless power transfer d. All of the above
When a business installs charging equipment, the public may sense that the business supports which of the following?
a. Affluence b. The electrical industry c. The oil industry d. Sustainability
Regenerative braking is best described by which of the following?
a. An energy recovery system b. Not reliable as a braking method c. Obsolete technology that existed on EV models in the 1990s d. Turns electrical energy to kinetic energy
Requirements for branch circuits and AFCI/GFCI protection of branch circuits are found in ? .
a. Article 200 b. Article 210 c. Article 230 d. Article 240
When an EV and EVSE is used to facilitate power supply as an interactive power production source, which article must be applied?
a. Article 700 b. Article 702 c. Article 704 d. Article 705
When an EV and its EVSE is used as a power supply for an optional standby system, requirements found in ? are applied.
a. Article 700 b. Article 702 c. Article 704 d. Article 705
Chapter 9 of the NEC contains which of the following?
a. Auxiliary information that is not enforceable b. Engineering tables that are only intended to be used by electrical designers c. Load calculation examples d. Tables that are applicable and enforceable when referenced elsewhere in the Code
Which of the following is not a category of electric vehicles?
a. BEV b. HEV c. ICE d. PHEV
What category of EV has been available to consumers the longest?
a. BEV b. HEV c. PHEV d. All of the above
Which of the following describes a plug-in electric vehicle that runs on batteries until nearly depleted, then switches over to an ICE generator to extend the battery range?
a. BEV b. PHEV c. All electric vehicles have this capability. d. No electric vehicle currently on the market has this capability.
What is the SAE standard for wireless charging?
a. CHAdeMO b. J2954 recommended practice c. SAE J1772 d. None of the above
Which of the following is the Japanese DC quick charging standard?
a. CHAdeMO b. JARI c. SAE d. TEPCO
EV networks generate revenue with which of the following?
a. Call-to-pay b. Membership fees c. Station usage fees d. All of the above
What types of commercial/industrial vehicles are currently available in an electrified version?
a. Cargo and material-handling equipment b. Delivery vans and buses c. Semi-trailer trucks d. All of the above
What factors limited the popularity of EVs as internal combustion engine vehicles came to the market in the early 1900s?
a. Charge times b. Range c. Speed d. All of the above
Which of the following is not true of EV charging networks?
a. Charging networks offer both paid memberships and free memberships with pay-as-you-go charging. b. There are over a dozen networks across the U.S. and Canada. c. They allow businesses a way to draw consumers to charging equipment and generate revenue via transaction processing. d. None of the above
What improvements in technology have increased interest in EVs?
a. Charging stations specific to each type of vehicle b. High cost and poor public awareness c. Improved range, power, and lighter batteries d. None of the above
Which of the following drive the market for EVs?
a. Cheaper gasoline prices b. Decreased cost of electric vehicles c. Increased interest in alternatives to gas-powered vehicles d. Both b. and c.
Which of the following was an early electric vehicle charger?
a. City of Seattle's Electro-Park electrified parking space b. Ford Dyna-Charge c. General Electric arc rectifier d. Tesla Model 001 Charger
An AC charger with a single-phase 208-volt or 240-volt connection and a continuous current output of up to 80 amperes is classified as a ? charger.
a. Class 2 b. high-voltage c. Level 1 d. Level 2
What are the advantages of wireless charging?
a. Compatibility standards are still under development b. It has no exposed electrical contact points c. Wireless charging has better aesthetic quality d. Both b. and c.
Which of the following is not an alternative to fossil fuels?
a. Compressed air b. Electricity c. Fuel cell d. Gasoline
Which of the following is not a variable that determines the charging time of an EV?
a. Connector configuration b. Max power capacity of the EVSE's converter c. Size of the electrical feeder/service supplying the EVSE d. All of the above
Information gathered during the site visit should include which of the following?
a. Details about the existing electrical system b. Details on the desired EVSE location c. Notes on how the customer intends to use the EVSE installation d. All of the above
EVSE output cable is permitted to be made from Type ? cable and is generally permitted to have a maximum length of ? .
a. EVJT / 25' b. MI / 25' c. SJO / 20' d. SO / 20'
Which of the following describes an EV drivetrain architecture in which power can be transmitted to the drive from two sources at the same time?
a. Full electric drive b. Parallel hybrid drive c. Series hybrid drive d. 3-phase series drive
What was the first mass-produced hybrid electric vehicle?
a. GM EV-1 b. Honda Insight Hybrid c. Tesla Model 3 d. Toyota Prius
Which of the following describes an advantage that hybrid electric vehicles have over traditional gas-powered vehicles?
a. Hybrid vehicles are more expensive than gas-powered vehicles. b. Hybrid vehicles have superior efficiency compared to gas-powered vehicles. c. Both a. and b. d. None of the above
Installations covered by the NEC include which of the following?
a. Industrial substations b. Installations on public and private premises c. Recreational vehicles, floating buildings, and mobile homes d. All of the above
Conducting an onsite visit when assessing a location for an electric vehicle supply equipment (EVSE) installation is important for which of the following reasons?
a. It allows the electrical contractor to understand the prospective customers' needs for an EVSE installation. b. It provides an opportunity for the electrical contractor to gather facts and present themselves as a knowledgeable professional. c. The electrical contractor can tell the prospective customer what must be done. d. Both a. and b.
Which of the following is true about the J1772 standard control pilot terminal pin's function?
a. It changes the state of the EVSE according to the voltage present. b. It defines the state of the EVSE. c. It uses a +12V to -12V AC square wave signal. d. All of the above
An AC charger with a single-phase 120-volt connection and 14-16 amperes of continuous current output is classified as a ? charger.
a. Level 1 b. Level 2 c. low-voltage d. SAE standard
What best describes early EVs?
a. Loud and difficult to steer b. Oily, noisy, and hard to start c. Quiet, easy to start, and mechanically simple d. Very unreliable
The SAE standard for wireless charging has specifications that include which of the following?
a. Magnetic triangulation for vehicle alignment over the power source coil b. Means to allow for payment without physical interaction c. Up to 11 kW charging capacity d. All of the above
The Society of Auto Engineers (SAE) creates standards for which of the following?
a. Maximum current and voltage specifications for EVSE b. Plug configuration c. Safety features d. All of the above
Which of the following is connected to the charge controller of a wireless EV charger via hardwiring?
a. Power capture resonator b. Power control unit c. Power multiplier coil d. Power source coil
Charging is defined as which of the following?
a. Refilling brake fluid in an EV b. Removing the batteries from an EV and placing them inside charging equipment c. Replacing batteries in an EV d. Supplying power (kW) to an EV battery
Which of the following calculations are covered in Article 220?
a. Residential, commercial, industrial service, and feeder b. Taps, motors, transformer OCPD c. Utility distribution network d. None of the above
Overcurrent protection for EVSE is covered in ? .
a. Section 625.1 b. Section 625.21 c. Section 625.31 d. Section 625.41
incentives available for EVSE installation include which of the following?
a. State or federal tax credits b. Tax incentives from the city of municipality c. Time-of-use discounted rates or other incentives from the serving utility d. All of the above
Which of the following illustrates why electric vehicles were so popular in the early days of automobiles?
a. They were clean to operate. b. They were mechanically complicated. c. They were quiet. d. Both a. and c.
According to Article 625, EVSE is equipment that has the specific purpose of transferring energy from ? to the electric vehicle.
a. a DC power source b. a generator c. the premises wiring system d. the utility
The purpose of the J1772 connector pins is to provide ? .
a. a charging interface that is safe for consumers to use b. a means to signal the EVSE to stop charging based on the pin contact state c. signals to the EVSE that the connector is properly seated on the vehicle d. all of the above
The State of Charge of the EV battery is ? .
a. a determining factor in calculating the time necessary to fully charge an EV b. an indicator of battery age c. dependent on how many miles the vehicle has been driven in its lifetime d. low when an EV is fully charged
NEC Chapters 1-4 apply to ? .
a. all installations b. all installations except as modified by Chapters 5, 6, and 7 c. only Chapter 8 d. none of the above
The tables in Article 310 identify ? .
a. allowable ampacity of conductors based on conductor size and material b. ampacity adjustment and correction factors c. wire types and application d. all of the above
EVSE shall have a(n) ? system for shock protection for personnel.
a. approved b. labeled c. listed d. marked
Temperature ratings of equipment, overcurrent devices, and conductors must be ? and ? to not exceed the lowest rated element of the circuit.
a. approved / installed b. picked / chosen c. selected / coordinated d. none of the above
The EV industry is comprised of ? .
a. auto manufacturers b. consumer advocacy groups c. EV charging equipment manufacturers d. research and standards organizations e. all of the above
NEC 110.14(C) requires conductor ampacity to be ? .
a. based on overcurrent protection rules in Article 240 b. chosen based on ambient temperature only c. coordinated with equipment termination ratings d. none of the above
NECA 413-2012 contains ? requirements for EVSE installation, covering everything from planning an installation to ADA considerations and commissioning process.
a. basic b. complete c. performance-based d. suggested
DC charging equipment provides DC directly to ? in an EV.
a. battery management systems b. battery monitoring devices c. charge multiplier systems d. current management systems
EVSE must be equipped with a(n) ? that prevents the charging connector from being accidentally energized before it is connected to the vehicle.
a. cap b. cover c. guard d. interlock
Forklifts, yard tractors, and drayage trucks are all examples of ? .
a. cargo-handling equipment b. delivery vehicles c. light duty trucks d. none of the above
NEC Chapter 8 covers ? systems and ? subject to Chapters 1-7 unless specifically referenced.
a. communications / is b. communications / is not c. emergency / is d. emergency / is not
Article 110 covers ? requirements for wiring and equipment.
a. conditional b. general c. simple d. specific
The National Electrical Code (NEC) ? .
a. covers all electrical work, from utility generation to household wiring b. is not intended to provide requirements for installation that safeguard persons and property from the hazards arising from the use of electricity c. provides minimum installation requirements
EVSE equipment shall have means to ? the charging cable if strain is placed upon it that could rupture the cable or connector, leading to exposure of live parts.
a. de-couple b. deenergize c. release d. retract
A successful meeting with a prospective customer requires the contractor or contractor's representative to ? .
a. demonstrate that they are qualified and have the needed expertise to handle the project b. listen to the customer and ask questions c. look professional and speak professionally d. all of the above
EV networks utilize memberships that are ? .
a. fee-based or pay-as-you-go b. rare and exclusive c. all of the above d. none of the above
Installing electric vehicle charging equipment may ? public perception of a business.
a. improve b. minimize c. reduce d. none of the above
EVs can be equipped with a(n) ? motor.
a. induction b. internal combustion c. permanent magnet d. either a. or c.
Wireless EV charging utilizes the principles of ? .
a. induction b. parallel resonant circuits c. series resonant circuits d. all of the above
Later in the development of EV charging equipment, the actual charging means was accomplished by a(n) ? that converts AC to DC to be used in charging the vehicle's battery.
a. internal combustion generator b. inverter c. rectifier d. voltage source
The ? load for listed occupancies is based on Table 220.12.
a. lighting b. receptacle c. service d. transformer
Definitions that are specific to a particular article are located in which of the following sections?
a. xxx.1 b. xxx.2 c. xxx.10 d. xxx.12
