SOLAR FINAL QUESTIONS & ANSWERS
local authorities often supplement the NEC with special requirements called
__________________ - Answer -building ordinances
Article ___ of the NEC covers specific requirements unique to PV systems and
installations - Answer -690
The components that connect the PV source circuit to the rest of the system is the
_______________ - Answer -PV Output circuit
Inverter output circuit requirements are the same as _______ _______ residential wiring
requirements - Answer -General Purpose
The maximum voltage output of an array is properly calculated as the sum of the open-
circuit voltages of the series-connected modules with an adjustment for the __________
- Answer -temperature
The NEC identifies two types of PV circuit currents, _______________ current and PV
Output circuit current - Answer -PV source circuit
The maximum PV circuit output current is the value used to size circuit __________ and
circuit protection - Answer -Conductors
The maximum PV circuit current is equal to ____ of the sum of the individual source
circuit currents - Answer -125%
Typically, a PV system contains numerous strings of _______________ PV modules -
Answer -Series-connected
NEC requires the ________ of the conductors to be at least 125% of the maximum
current - Answer -ampacity
insufficient conductor size can cause inacceptable _______ losses - Answer -Voltage
__________ protects the conductor inside from unintended contact with personnel or
equipment - Answer -Insulation
PV output wiring is often the _______ run in a PV System - Answer -Longest
Conductor ampacity must be adjusted, or _______, according to the temperature -
Answer -De-Rated
A ______________ provides an alternative, low resistance emergency path for current
to flow and disperse into the earth - Answer -Grounding system
, in a 3-phase system, current flows through the _______ line only when there's an
imbalance - Answer -Neutral
NEC 690.48 requires the installation of a temporary _____________ to maintain ground
connection for safety while the system is being serviced - Answer -Bonding Jumper
A __________________ provides an electrical connection to earth - Answer -
Grounding Electrode
A __________ occurs when a short-circuit between either neutral or the powerlines and
ground occurs - Answer -Ground Fault
_________ strikes produce an enormous surge of current at high voltage - Answer -
Lighting
A _____________ network provides a low impedance path from the termination network
to the electrodes - Answer -Down Conductor
A _____________ responds to a sudden spike in voltage by shorting the lines to ground
to divert the surge to ground - Answer -Surge Arrestor
The ____ limits current to protect a system - Answer -TVSS
In PV systems, the surge arrestor on the DC side is located at the __________ -
Answer -Combiner Box
Since most PV work is outdoors, workers should protect themselves from solar radiation
by wearing a hat, safety glasses with ___________, and Sunscreen - Answer -UV
Protection
If a ladder will be near live electrical components, the hand rails of the ladder must be
made of non-conductive materials such as ___________ - Answer -Fiberglass
Some PV systems use batteries that contain ______________, which can cause
serious chemical burns - Answer -Corrosive Acids
A ______ circuit diagram uses a separate line to represent each conductor in an
electrical circuit - Answer -3-line
The most basic drawing that is used to represent the electrical flow of multiple wires
between components of an electrical system is a _____ circuit diagram - Answer -1-line
The _________ mounting style mounts the PV array in a permanent position - Answer -
Fixed Tilt
local authorities often supplement the NEC with special requirements called
__________________ - Answer -building ordinances
Article ___ of the NEC covers specific requirements unique to PV systems and
installations - Answer -690
The components that connect the PV source circuit to the rest of the system is the
_______________ - Answer -PV Output circuit
Inverter output circuit requirements are the same as _______ _______ residential wiring
requirements - Answer -General Purpose
The maximum voltage output of an array is properly calculated as the sum of the open-
circuit voltages of the series-connected modules with an adjustment for the __________
- Answer -temperature
The NEC identifies two types of PV circuit currents, _______________ current and PV
Output circuit current - Answer -PV source circuit
The maximum PV circuit output current is the value used to size circuit __________ and
circuit protection - Answer -Conductors
The maximum PV circuit current is equal to ____ of the sum of the individual source
circuit currents - Answer -125%
Typically, a PV system contains numerous strings of _______________ PV modules -
Answer -Series-connected
NEC requires the ________ of the conductors to be at least 125% of the maximum
current - Answer -ampacity
insufficient conductor size can cause inacceptable _______ losses - Answer -Voltage
__________ protects the conductor inside from unintended contact with personnel or
equipment - Answer -Insulation
PV output wiring is often the _______ run in a PV System - Answer -Longest
Conductor ampacity must be adjusted, or _______, according to the temperature -
Answer -De-Rated
A ______________ provides an alternative, low resistance emergency path for current
to flow and disperse into the earth - Answer -Grounding system
, in a 3-phase system, current flows through the _______ line only when there's an
imbalance - Answer -Neutral
NEC 690.48 requires the installation of a temporary _____________ to maintain ground
connection for safety while the system is being serviced - Answer -Bonding Jumper
A __________________ provides an electrical connection to earth - Answer -
Grounding Electrode
A __________ occurs when a short-circuit between either neutral or the powerlines and
ground occurs - Answer -Ground Fault
_________ strikes produce an enormous surge of current at high voltage - Answer -
Lighting
A _____________ network provides a low impedance path from the termination network
to the electrodes - Answer -Down Conductor
A _____________ responds to a sudden spike in voltage by shorting the lines to ground
to divert the surge to ground - Answer -Surge Arrestor
The ____ limits current to protect a system - Answer -TVSS
In PV systems, the surge arrestor on the DC side is located at the __________ -
Answer -Combiner Box
Since most PV work is outdoors, workers should protect themselves from solar radiation
by wearing a hat, safety glasses with ___________, and Sunscreen - Answer -UV
Protection
If a ladder will be near live electrical components, the hand rails of the ladder must be
made of non-conductive materials such as ___________ - Answer -Fiberglass
Some PV systems use batteries that contain ______________, which can cause
serious chemical burns - Answer -Corrosive Acids
A ______ circuit diagram uses a separate line to represent each conductor in an
electrical circuit - Answer -3-line
The most basic drawing that is used to represent the electrical flow of multiple wires
between components of an electrical system is a _____ circuit diagram - Answer -1-line
The _________ mounting style mounts the PV array in a permanent position - Answer -
Fixed Tilt
