Imagine Solar NABCEP Exam with all Correct & 100%
Verified Answers |Latest Update |Already Graded A+
According to the NEC, only ____________ should be installing solar photovoltaic systems.
a. qualified persons
b. certified persons
c. licensed persons
d. electricians ✔Correct Answer-a
An AC photovoltaic module should be certified per ___________.
a. UL 1703
b. UL 1741
c. both UL 1703 and UL 2703
d. both UL 1703 and UL 1741 ✔Correct Answer-d
UL 1741 SA adds all of the following new functional requirements for inverters to the UL 1741
standard except:
a. Testing used to characterize the inverter power de-rating curve
b. RR - Normal Ramp Rate
c. L/HVRT Low and High Voltage Ride Through
d. Remote Connect/Disconnect ✔Correct Answer-a
Which code or standard describes commissioning tests and template to provide effective
documentation to a customer for use by system designers and installers of grid connected solar PV
systems?
a. National Electric Code
b. IEC 62446-1:2016+A1:2018 ✔Correct Answer-b
Per the 2017 NEC, which of the following is true when calculating maximum photovoltaic system
voltage?
a. When open-circuit voltage temperature coefficients are supplied in the instructions for listed PV
modules, they shall be used to calculate the maximum PV system voltage as required by 110.3(B)
instead of using Table 690.7.
b. PV system dc circuits on or in one- and two-family dwellings shall be permitted to have a
maximum voltage of 1000 volts or less.
c. For PV systems with a generating capacity of 100 kW or greater, a documented and stamped PV
system design, using an industry standard method and provided by a licensed professional electrical
engineer, shall be permitted.
d. For 2-wire circuits connected to bipolar systems, the maximum system voltage shall be the highest
voltage between the conductors of the 2-wire circuit if one conductor of each circuit of a bipolar sub
array is solidly grounded. ✔Correct Answer-C
When comparing between between the 2014 NEC and the 2017 NEC, which of the following is not a
true statement regarding the rapid shutdown requirements?
a. For the 2014 NEC, the array boundary was 10 feet in all directions, but for the 2017 NEC, the array
boundary has been decreased to 1 foot in all directions.
b. Controlled conductors located inside the array boundary shall be limited to not more than 80 volts
within 30 seconds of rapid shutdown initiation for the 2017 NEC versus 80 volts in 80 seconds in the
2014 NEC>
, c. Controlled DC conductors located outside the array boundary shall be limited to not more than 30
volts within 30 seconds of rapid shutdown initiation for the 2017 NCE, versus not more than 30 volts
and 240 volt-amperes within 10 seconds of rapid shutdown initiation for the 2014 NEC.
d. Both the 2014 NEC and the 2017 NEC requires that equipment that performs the rapid shutdown
function shall be lis ✔Correct Answer-b
Per the 2017 NEC, one method for calculating conductor ampacities for PV system currents (named
"After Application of Adjustment and Correction Factors") uses all of the following factors except for
___________________.
a. The maximum currents calculated in 690.8(A)
b. Ambient temperature adjustment for raceways or cables exposed to sunlight 3.5 inches above
rooftops.
c. Adjustment factors for more than three current-carrying conductors in conduit.
d. Allowable Ampacity Table 310.15(B)(16) through Table 310.15(B)(19), and Ampacity Table
310.15(B)(20) and Table 310.15(B)(21) as modified by 310.15(B)(1) through (B)(7) ✔Correct
Answer-b
Per the 2017 NEC, all of the following is permitted or required for ungrounded PV systems except
______________________.
a. All PV source and output circuit conductors shall have overcurrent protection.
b. All PV source and output circuit conductors shall have disconnects.
c. Single-conductor cable Type USE-2 and single conductor cable listed and identified as photovoltaic
(PV) wire shall be permitted in exposed outdoor locations in PV source circuits within the PV array.
d. All overcurrent devices shall be placed in the same polarity for all circuits within a PV system.
✔Correct Answer-a
What is the minimum electrical metallic tubing size allowed for six #10 AWG THWN-2 conductors?
a. 3/8"
b. 1/2"
c.3/4"
d.1" ✔Correct Answer-c
The 2017 NEC introduced the concept of _________________ grounded PV systems.
a. impedance
b. functional
c. ungrounded
d. solidly ✔Correct Answer-b
The 2017 NEC requires additional array electrodes for _____________________.
a. ungrounded PV systems
b. all PV systems on or in buildings
c. 2-wire PV arrays with one functional grounded conductor
d. none of the above ✔Correct Answer-d
A functional grounded PV system can be connected to ground through all of the following except
__________________.
a. an isolated grounded ac circuit
b. resistance device or fuse
c. an electronic means that is part of a listed ground-fault protection system
d. a circuit breaker ✔Correct Answer-a
Verified Answers |Latest Update |Already Graded A+
According to the NEC, only ____________ should be installing solar photovoltaic systems.
a. qualified persons
b. certified persons
c. licensed persons
d. electricians ✔Correct Answer-a
An AC photovoltaic module should be certified per ___________.
a. UL 1703
b. UL 1741
c. both UL 1703 and UL 2703
d. both UL 1703 and UL 1741 ✔Correct Answer-d
UL 1741 SA adds all of the following new functional requirements for inverters to the UL 1741
standard except:
a. Testing used to characterize the inverter power de-rating curve
b. RR - Normal Ramp Rate
c. L/HVRT Low and High Voltage Ride Through
d. Remote Connect/Disconnect ✔Correct Answer-a
Which code or standard describes commissioning tests and template to provide effective
documentation to a customer for use by system designers and installers of grid connected solar PV
systems?
a. National Electric Code
b. IEC 62446-1:2016+A1:2018 ✔Correct Answer-b
Per the 2017 NEC, which of the following is true when calculating maximum photovoltaic system
voltage?
a. When open-circuit voltage temperature coefficients are supplied in the instructions for listed PV
modules, they shall be used to calculate the maximum PV system voltage as required by 110.3(B)
instead of using Table 690.7.
b. PV system dc circuits on or in one- and two-family dwellings shall be permitted to have a
maximum voltage of 1000 volts or less.
c. For PV systems with a generating capacity of 100 kW or greater, a documented and stamped PV
system design, using an industry standard method and provided by a licensed professional electrical
engineer, shall be permitted.
d. For 2-wire circuits connected to bipolar systems, the maximum system voltage shall be the highest
voltage between the conductors of the 2-wire circuit if one conductor of each circuit of a bipolar sub
array is solidly grounded. ✔Correct Answer-C
When comparing between between the 2014 NEC and the 2017 NEC, which of the following is not a
true statement regarding the rapid shutdown requirements?
a. For the 2014 NEC, the array boundary was 10 feet in all directions, but for the 2017 NEC, the array
boundary has been decreased to 1 foot in all directions.
b. Controlled conductors located inside the array boundary shall be limited to not more than 80 volts
within 30 seconds of rapid shutdown initiation for the 2017 NEC versus 80 volts in 80 seconds in the
2014 NEC>
, c. Controlled DC conductors located outside the array boundary shall be limited to not more than 30
volts within 30 seconds of rapid shutdown initiation for the 2017 NCE, versus not more than 30 volts
and 240 volt-amperes within 10 seconds of rapid shutdown initiation for the 2014 NEC.
d. Both the 2014 NEC and the 2017 NEC requires that equipment that performs the rapid shutdown
function shall be lis ✔Correct Answer-b
Per the 2017 NEC, one method for calculating conductor ampacities for PV system currents (named
"After Application of Adjustment and Correction Factors") uses all of the following factors except for
___________________.
a. The maximum currents calculated in 690.8(A)
b. Ambient temperature adjustment for raceways or cables exposed to sunlight 3.5 inches above
rooftops.
c. Adjustment factors for more than three current-carrying conductors in conduit.
d. Allowable Ampacity Table 310.15(B)(16) through Table 310.15(B)(19), and Ampacity Table
310.15(B)(20) and Table 310.15(B)(21) as modified by 310.15(B)(1) through (B)(7) ✔Correct
Answer-b
Per the 2017 NEC, all of the following is permitted or required for ungrounded PV systems except
______________________.
a. All PV source and output circuit conductors shall have overcurrent protection.
b. All PV source and output circuit conductors shall have disconnects.
c. Single-conductor cable Type USE-2 and single conductor cable listed and identified as photovoltaic
(PV) wire shall be permitted in exposed outdoor locations in PV source circuits within the PV array.
d. All overcurrent devices shall be placed in the same polarity for all circuits within a PV system.
✔Correct Answer-a
What is the minimum electrical metallic tubing size allowed for six #10 AWG THWN-2 conductors?
a. 3/8"
b. 1/2"
c.3/4"
d.1" ✔Correct Answer-c
The 2017 NEC introduced the concept of _________________ grounded PV systems.
a. impedance
b. functional
c. ungrounded
d. solidly ✔Correct Answer-b
The 2017 NEC requires additional array electrodes for _____________________.
a. ungrounded PV systems
b. all PV systems on or in buildings
c. 2-wire PV arrays with one functional grounded conductor
d. none of the above ✔Correct Answer-d
A functional grounded PV system can be connected to ground through all of the following except
__________________.
a. an isolated grounded ac circuit
b. resistance device or fuse
c. an electronic means that is part of a listed ground-fault protection system
d. a circuit breaker ✔Correct Answer-a
