1|Page
LA 4-50 SOLAR ENERGY EQUIPMENT INSTALLER
EXAMINATION COMPLETE VERIFIED QUESTIONS
AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
How much space needs to be left between panels for the
middle clamps? - Answer-1"
The tool used to measure the specific gravity of battery
electrolyte is a(n) ________. - Answer-hydrometer
What is the sum protection factor (SPF) rating for clothing
that solar panel installers should wear when working on a
site? - Answer-30
What can an installer expect the efficiency factor to be for
most inverters? - Answer-94 percent
If a standoff for a roof-mounted array needs to be mounted
in an area between two wooden rafters, what can be
added to the rafters for anchor the mount? - Answer-
Spans made of 2"x6"
,2|Page
When wiring up storage batteries in series, the negative
terminals from the last battery is tied through a ________.
- Answer-shunt to a DC negative busbar
A mounting beam received from UNIRAC is _________. -
Answer-12 foot long
When a ground-fault protection device is labeled, its label
should say if a ground fault is indicated,
___________________. - Answer-the normally grounded
conductors may be energized and ungrounded
A solar panel installer uses a heavy rubber mallet to
________. - Answer-locate rafters
The NEC prohibits the use of a PV system disconnect in
__________. - Answer-bathrooms
If materials or tools are not available prior to starting an
installation, but can be worked around until they arrive the
decision to progress is made by the _________. - Answer-
installer's supervisor
Which kind of PV panels are sometimes referred to as
BIPVs? - Answer-Integrally-mounted
, 3|Page
When PV equipment is set up under standard test
conditions and placed under no load, the open-circuit
voltages should remain within what percentage of each
other as long as the irradiance on the panel space? -
Answer-2
Under standard test conditions, the array should be
receiving full sun, which is how many watts per square
meter of panel space? - Answer-1,000
Approximately what percentage of PV power is expected
to be lost through the wiring? - Answer-3 percent
The charging of an FLA battery continues until the cell or
cells come with how many points of the specific gravity of
the filling electrolyte, connected for 77*F (23*C) - Answer-
0.005
When assembling a new Outback Power System PV8
combiner for installation, the part of the combiner
enclosure that holds the circuit breakers is the _________.
- Answer-DIN rail
LA 4-50 SOLAR ENERGY EQUIPMENT INSTALLER
EXAMINATION COMPLETE VERIFIED QUESTIONS
AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
How much space needs to be left between panels for the
middle clamps? - Answer-1"
The tool used to measure the specific gravity of battery
electrolyte is a(n) ________. - Answer-hydrometer
What is the sum protection factor (SPF) rating for clothing
that solar panel installers should wear when working on a
site? - Answer-30
What can an installer expect the efficiency factor to be for
most inverters? - Answer-94 percent
If a standoff for a roof-mounted array needs to be mounted
in an area between two wooden rafters, what can be
added to the rafters for anchor the mount? - Answer-
Spans made of 2"x6"
,2|Page
When wiring up storage batteries in series, the negative
terminals from the last battery is tied through a ________.
- Answer-shunt to a DC negative busbar
A mounting beam received from UNIRAC is _________. -
Answer-12 foot long
When a ground-fault protection device is labeled, its label
should say if a ground fault is indicated,
___________________. - Answer-the normally grounded
conductors may be energized and ungrounded
A solar panel installer uses a heavy rubber mallet to
________. - Answer-locate rafters
The NEC prohibits the use of a PV system disconnect in
__________. - Answer-bathrooms
If materials or tools are not available prior to starting an
installation, but can be worked around until they arrive the
decision to progress is made by the _________. - Answer-
installer's supervisor
Which kind of PV panels are sometimes referred to as
BIPVs? - Answer-Integrally-mounted
, 3|Page
When PV equipment is set up under standard test
conditions and placed under no load, the open-circuit
voltages should remain within what percentage of each
other as long as the irradiance on the panel space? -
Answer-2
Under standard test conditions, the array should be
receiving full sun, which is how many watts per square
meter of panel space? - Answer-1,000
Approximately what percentage of PV power is expected
to be lost through the wiring? - Answer-3 percent
The charging of an FLA battery continues until the cell or
cells come with how many points of the specific gravity of
the filling electrolyte, connected for 77*F (23*C) - Answer-
0.005
When assembling a new Outback Power System PV8
combiner for installation, the part of the combiner
enclosure that holds the circuit breakers is the _________.
- Answer-DIN rail
