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NABCEP PV ASSOCIATE EXAM QUESTIONS with 100% Correct answers |Verified Solutions
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NABCEP PV ASSOCIATE EXAM QUESTIONS with 100% Correct answers |Verified Solutions
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NABCEP PV ASSOCIATE EXAM QUESTIONS with100% Correct answers |Verified Solutions
A system that sits on a flat/low slope rooftop and has no penetrations is called a:
A) Flush mounted system
B) Flashed system
C) BIPV system
D) Ballasted system - ✔✔Ballasted systems are common flat low slope roof systems that are
not penetrating the roof. A ballast is something that is relatively heavy keeps the PV from
blowing away
Proper slope for an extension ladder? - ✔✔1:4
The primary source for a utility interactive PV system is the:
A) Inverter
B) Utility
C) PV
D) Charge controller - ✔✔Utility. The interactive inverter will match the voltage and
frequency of the utility
What is specified on a charge controller?
A) Irradiance limit
B) Insolation limit
C) Maximum voltage
D) Minimum current - ✔✔A charge controller will have maximum voltage specified (and so
will most any equipment). A charge controller will also specify maximum current
,Units for irradiance - ✔✔Irradiance is power per area, usually measured in watts per square
meter. 1000W/m^2 is the irradiance level called Peak sun, or irradiance at STC. Energy per area
is irradiation or insolation.
What is used to calculate maximum system voltage? - ✔✔Temperature is used to calculate
maximum system voltage along with Voc, the temperature coeffient of Voc and the number of
PV modules connected in series.
What will be increased by reflective surfaces (albedo)? - ✔✔Current. Reflections and
increased light increases current.
What is the best voltage for charging a 12V lead-acid battery?
A) 12V
B) 11.8V
C) 12.3V
D) 14.1V - ✔✔14.1 . Best voltage for charging a 12V battery is 14.1V (best of the choices
given). A 12V lead-acid battery will sit charged at 12.6V and often charge somewhere between
14 and 15V. If a 12V lead-acid battery is at 50% depth of discharge, it will measure about 12V
Unit for resistance - ✔✔Ohms
Wind uplift forces in the construction industry in the US are measured in... - ✔✔Pounds per
square foot (psf)
Direction on a compass is - ✔✔Azimuth
Hydraulic analogy for voltage is - ✔✔Pressure. Current is flow
Which room cannot have a PV dc disconnect?
, A) Kitchen
B) Attic
C) Bathroom
D) Bedroom - ✔✔Bathroom. PV dc disconnect not allowed in bathroom (think wet feet)
Stand-alone inverter output goes to: - ✔✔Loads. Off-grid inverter output goes to loads.
Loads are what use electricity
Best sealant for residential rooftop - ✔✔Polyurethane and silicone are the best. Silicone is a
sealant, silicon is what solar cells are made of
500W/m^2 for 4 hours is - ✔✔2kWh
For a supply side connection, the output of the inverter is limited by - ✔✔Service entrance
conductor ampacity. The loads are already protected from the utility by the main service
disconnect (main breaker)
Which is the smallest installable part of a PV system?
A) Solar panel
B) Solar module
C) Solar array
D) PV source circuit - ✔✔Solar module. A solar module is the smallest unit that you can
install. A solar panel is made up of solar modules. You cannot install a single solar cell, a number
of solar cells are put together to make a module. 60 or 72
What is the most typical hazard with PV systems of the following:
A) Shock
B) Arc Flash
C) Lightning
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