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NABCEP STUDY GUIDE QUESTIONS AND ANSWERS GRADED A+ 2024/2025
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NABCEP STUDY GUIDE QUESTIONS AND ANSWERS GRADED A+ 2024/2025
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NABCEP STUDY GUIDEBalance of System Compontents - ANSUsed to conduct, distribute and manipulate glide of
power inside the gadget. (Everything besides modules and inverters).
Power Conditioning Components - ANSInverters, Charge Controllers, Maximum Power Point
Trackers
Stand Alone PV Systems - ANSOperate independently of other electric systems (ie the Grid)
Interactive PV Systems - ANSOperate in parallel and are interconnected and synchronized
with the electrical grid.
Power - ANSPower is the RATE of moving energy. Expressed in Watts.
*Think of an hourly wage**
Energy (definition) - ANSThe TOTAL quantity of power used over the years
**Think Total Income**
Energy (Equation) - ANSEnergy (Wh) = Avg. Power (W) x Time (hr)
1 Megawatt = ? - ANS1,000,000 Watts
(Myyyyyyyyyyyy..........KingHenrysDrunkenUncleDrinksChocolateMilk
Power Density (Define) - ANSPower in step with area of size (Watts/Square Foot)
Power Density (Equation) - ANSPower Density of Module = Watts of Module / Square
Footage of Module
Ex:
175 W module that is 14.4 Square Feet has energy density of 12.2 W/sf
Solar Azimuth Angle - ANSDefines the path of the sun's horizontal projection relative to a
degree on Earth.
Solar Altitude Angle - ANSDefines the Suns elevation above the horizon.
Zenith Angle - ANSAngle of the sun in evaluation to the zenith (ninety degrees)
Opposite of Altitude Angle (added together the two should be 90)
Sun Path Diagram - ANSA graphical illustration of the Sun's altitude and Azimuth angles
over a given day of the year (for a specific range)
,Solar Noon - ANSThe neighborhood time while the Sun is at it is highest point inside the sky
and crossing the neighborhood meridian (line of Longitude).
It's rarely midday.
Best way to find it's miles to find the projected sundown and dawn time after which
determine the midway point.
Summer Solstice - ANSFirst Day of Summer (June twenty first)
Winter Solstice - ANSFirst Day of Winter (December twenty first)
Fall Equinox - ANSFirst Day of Fall (September 21st)
Spring Equinox - ANSFirst Day of Spring (March twenty first)
Declination - ANSThe angular distance of a factor north or south of the celestial equator.
*The solar varies + or - 23.Forty five ranges at some stage in the yr
Determine Solar Altitude Angles for Region - ANSMaximum and Minimum Solar Altitude
Angles are determined by using the Winter and Summer Solstice.
The equation is as follows:
ninety - (Latitude) + Solar Declination
Example:
At Latitude forty the variety would be decided as follows
SUMMER SOLSTICE
90 - 40 + 23.45 = seventy three.45
WINTER SOLSTICE
ninety - forty + (-23.45) = 26.55
ALTITUDE ANGLE RANGE FOR forty Deg LAT
73.Forty five to 26.Fifty five
Solar Window - ANSThe variety of Sun paths for a specific range among Winter and
Summer solstices.
What you spot on the Suneye
Array Azimuth Angle - ANSThe course an array floor faces based on a compass heading or
relative to due south
, Array Tilt Angle - ANSThe array tilt perspective is the perspective between the array surface
and the horizontal aircraft
Magnetic Declination - ANSThe angle between magnetic north and the real geographic
North Pole.
Positive Magnetic Declination - ANSWhen Magnetic North is East of true north.
Negative Magnetic Declination - ANSWhen Magnetic North is West of genuine north.
Agonic Line - ANSRegion in which magnetic declination is zero
Contour Chart - ANSCompares the outcomes of array orientation on the quantity of Solar
power acquired.
Peak Sun Hours - ANSAverage day by day amount of solar strength received on a given
floor.
Equated to range of hours that the solar irradiance could need to be at top stage of one
kW/m2 to build up the overall quantity of every day strength acquired.
Inter Row Spacing - ANSD = 3H
D is distance between rows
H is peak of module
Array Cooling primarily based on Module Orientation - ANSLandscape orientation presents
higher cooling than Portrait orientation
Standoff Mounting Systems - ANSAKA Flush Mount. The mounting machine that Dan
Whitson makes use of
Integral Mounting Systems - ANSSystems where modules are included into the roofing or
constructing outdoors
Ballasted Mounting Systems - ANSUsed for big scale flat industrial roofs.
Pole Mounted Systems - ANSManufactured racks are attached to a pole (floor mount)
Charged Battery - ANSConverts electrical strength to chemical strength
Discharged Battery - ANSConverts chemical energy to electric strength
Multi-Mode Inverter - ANSBattery based totally inverters that interact with the grid. When
Battery is charged, extra Power is going to the grid.
Traction Battery - ANSA lead-acid battery designed for use in deep discharge programs
(usually used with PV)
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