NABCEP Technical Sales Exam Questions with
Correct Answers
Power Conditioning Equipment Correct Answer-inverters, dc-to-dc
converters,
chargers, charge and load
controllers, and maximum power
point trackers.
Balance of System Component Correct Answer-Balance-of-system
(BOS) components include all mechanical or electrical equipment and
hardware
used to assemble and integrate the major components in a PV system
together. Electrical BOS
components are used to conduct, distribute and control the flow of
power in the system.
Examples of BOS components Correct Answer-Conductors and wiring
methods
• Raceways and conduits
• Junction and combiner boxes
• Disconnect switches
• Fuses and circuit breakers
• Terminals and connectors
• Grounding equipment
• Array mounting and other structural hardware
,Stand Alone PV Systems Correct Answer-Stand-alone PV systems
operate independently of
other electrical systems, and are commonly used for remote power or
backup applications,
including lighting, water pumping, transportation safety devices,
communications, off-grid
homes and many others.
What are stand alone systems designed for? Correct Answer-Stand-alone
systems may be designed to power dc and/or ac
electrical loads, and with a few exceptions, connect with energy storage
systems. A standalone
system may use a PV array as the only power source, or may
additionally use wind
turbines, an engine-generator, or another auxiliary source.
Interactive PV systems Correct Answer-Interactive PV systems operate
in parallel and are interconnected and synchronized with
the electric utility grid.
Self-consumption interactive systems Correct Answer-work with energy
storage systems
that can feed the building loads
from the PV system or the battery at
,different times of the day.
Breakdown Exam Correct Answer-Qualify the Customer 15 25%
B Site Analysis 10 17%
C Conceptual Design 14 23%
D Financial Costs, Incentives, and Savings 5 8%
E Financial Benefit Analysis and Financing 4 7%
F Non-financial Benefit Analysis 3 5%
G Performance Analysis 5 8%
H Prepare Proposals 4 7%
Totals 60 100%
Major Tasks in site analysis include Correct Answer-The major tasks in
site analysis include:
• Electrical service inspection
• Identification of system component locations
• Evaluation of structural integrity of potential
mounting locations
• Quantification of the solar resource at the location
Understanding the impacts
of ... on module voltage is critical Correct Answer-Understanding the
impacts
of temperature on module voltage is critical when
, determining the number of modules in each PV source
circuit. This design detail can determine system availability
and efficiency for the majority of its lifespan.
One important step is Correct Answer-determining the gross top-line
cost of the project.
Top line cost includes... Correct Answer-will include parts, labor,
warrantee, utility and municipality fees, and profit.
Additional array costs can come from Correct Answer-complications
due
to the location, type of surface upon which the PV
array(s) are to be mounted, the slope of the mounting
location, the need for trenching (or opening a surface)
to install conduit, extra material/labor costs resulting
from longer, thicker wires, etc
Contingency factors Correct Answer-Unknown factors, such
as subsoil conditions, roofing materials that are no longer
manufactured, roofing materials with unfamiliar
properties, and/or structural reinforcement can often
necessitate "allowances" to be included in the contract.
Correct Answers
Power Conditioning Equipment Correct Answer-inverters, dc-to-dc
converters,
chargers, charge and load
controllers, and maximum power
point trackers.
Balance of System Component Correct Answer-Balance-of-system
(BOS) components include all mechanical or electrical equipment and
hardware
used to assemble and integrate the major components in a PV system
together. Electrical BOS
components are used to conduct, distribute and control the flow of
power in the system.
Examples of BOS components Correct Answer-Conductors and wiring
methods
• Raceways and conduits
• Junction and combiner boxes
• Disconnect switches
• Fuses and circuit breakers
• Terminals and connectors
• Grounding equipment
• Array mounting and other structural hardware
,Stand Alone PV Systems Correct Answer-Stand-alone PV systems
operate independently of
other electrical systems, and are commonly used for remote power or
backup applications,
including lighting, water pumping, transportation safety devices,
communications, off-grid
homes and many others.
What are stand alone systems designed for? Correct Answer-Stand-alone
systems may be designed to power dc and/or ac
electrical loads, and with a few exceptions, connect with energy storage
systems. A standalone
system may use a PV array as the only power source, or may
additionally use wind
turbines, an engine-generator, or another auxiliary source.
Interactive PV systems Correct Answer-Interactive PV systems operate
in parallel and are interconnected and synchronized with
the electric utility grid.
Self-consumption interactive systems Correct Answer-work with energy
storage systems
that can feed the building loads
from the PV system or the battery at
,different times of the day.
Breakdown Exam Correct Answer-Qualify the Customer 15 25%
B Site Analysis 10 17%
C Conceptual Design 14 23%
D Financial Costs, Incentives, and Savings 5 8%
E Financial Benefit Analysis and Financing 4 7%
F Non-financial Benefit Analysis 3 5%
G Performance Analysis 5 8%
H Prepare Proposals 4 7%
Totals 60 100%
Major Tasks in site analysis include Correct Answer-The major tasks in
site analysis include:
• Electrical service inspection
• Identification of system component locations
• Evaluation of structural integrity of potential
mounting locations
• Quantification of the solar resource at the location
Understanding the impacts
of ... on module voltage is critical Correct Answer-Understanding the
impacts
of temperature on module voltage is critical when
, determining the number of modules in each PV source
circuit. This design detail can determine system availability
and efficiency for the majority of its lifespan.
One important step is Correct Answer-determining the gross top-line
cost of the project.
Top line cost includes... Correct Answer-will include parts, labor,
warrantee, utility and municipality fees, and profit.
Additional array costs can come from Correct Answer-complications
due
to the location, type of surface upon which the PV
array(s) are to be mounted, the slope of the mounting
location, the need for trenching (or opening a surface)
to install conduit, extra material/labor costs resulting
from longer, thicker wires, etc
Contingency factors Correct Answer-Unknown factors, such
as subsoil conditions, roofing materials that are no longer
manufactured, roofing materials with unfamiliar
properties, and/or structural reinforcement can often
necessitate "allowances" to be included in the contract.
