NABCEP Study Guide – Ultimate Study Set With
Accurate Solutions
Formula to find I (Amps) Correct Answer - I = V/R
Formula to find P (Watts) Correct Answer - P=VxI
Formula to find V (Volts) Correct Answer - V=IxR
Formula to find R (Ohms) Correct Answer - R = V/I
Power for Modules Output Correct Answer - W=IxVx
Modules
How is Irradiance measured? Correct Answer - W/m^2
Formula for Correction Factor Correct Answer - Op V x VCF%
Celsius x Delta T Celsius = V difference
Answer = Op V - V difference
Energy Collected Formula Correct Answer - W/m^2 x time =
kWh/m^2
How is Voltage affected in Series? Correct Answer - Voltage is
added and current stays the same
How is Current affected in Parallel? Correct Answer - Current
is added and voltage stays the same
Formula for Rmp Correct Answer - Rmp =Vmp/Imp
Formula for Pmp (Max Power in Watts) Correct Answer - Pmp
= Vmp x Imp
, Formula for Efficiency (n) Correct Answer - n = Pmp/E x A
n = efficiency - Pmp = Max Power (W) - E = Solar Irradiance
(W/m^2) - A = Surface Area (m^2)
n = W / W/m^2 x m^2
Find Max # of Modules Correct Answer - Current temp Celsius
x (temp coef of Voc% Celsius x Voc of Module)
= Current temp Celsius x Total Voc = Extra Volts due to cold
= Extra volts + Voc for module = Total Volts
answer = Max Input Volts / Total Volts
Max PV system voltage Correct Answer - Same Variables as
calculating Max # of modules
= input voltage/total volts = answer
Utility Interactive Correct Answer - PU, inverter, AC load,
utility
Utility w/ Battery (DC Coupled) Correct Answer - PU, charger
controller, Battery Bank, AC load/Critical panel, Utility
Utility w/ Battery (AC Coupled) Correct Answer - PU, inverter,
AC load/critical, inrerter charger, utility
DC has _________ with a utility grid w/ battery Correct Answer -
charge controller
AC ________ with a utility grid w/ battery Correct Answer -
inverter
Stand-Alone/Off Grid contains what? Correct Answer - PU,
charger controller, Battery Bank, inrerter, AC load/DC load panel
Accurate Solutions
Formula to find I (Amps) Correct Answer - I = V/R
Formula to find P (Watts) Correct Answer - P=VxI
Formula to find V (Volts) Correct Answer - V=IxR
Formula to find R (Ohms) Correct Answer - R = V/I
Power for Modules Output Correct Answer - W=IxVx
Modules
How is Irradiance measured? Correct Answer - W/m^2
Formula for Correction Factor Correct Answer - Op V x VCF%
Celsius x Delta T Celsius = V difference
Answer = Op V - V difference
Energy Collected Formula Correct Answer - W/m^2 x time =
kWh/m^2
How is Voltage affected in Series? Correct Answer - Voltage is
added and current stays the same
How is Current affected in Parallel? Correct Answer - Current
is added and voltage stays the same
Formula for Rmp Correct Answer - Rmp =Vmp/Imp
Formula for Pmp (Max Power in Watts) Correct Answer - Pmp
= Vmp x Imp
, Formula for Efficiency (n) Correct Answer - n = Pmp/E x A
n = efficiency - Pmp = Max Power (W) - E = Solar Irradiance
(W/m^2) - A = Surface Area (m^2)
n = W / W/m^2 x m^2
Find Max # of Modules Correct Answer - Current temp Celsius
x (temp coef of Voc% Celsius x Voc of Module)
= Current temp Celsius x Total Voc = Extra Volts due to cold
= Extra volts + Voc for module = Total Volts
answer = Max Input Volts / Total Volts
Max PV system voltage Correct Answer - Same Variables as
calculating Max # of modules
= input voltage/total volts = answer
Utility Interactive Correct Answer - PU, inverter, AC load,
utility
Utility w/ Battery (DC Coupled) Correct Answer - PU, charger
controller, Battery Bank, AC load/Critical panel, Utility
Utility w/ Battery (AC Coupled) Correct Answer - PU, inverter,
AC load/critical, inrerter charger, utility
DC has _________ with a utility grid w/ battery Correct Answer -
charge controller
AC ________ with a utility grid w/ battery Correct Answer -
inverter
Stand-Alone/Off Grid contains what? Correct Answer - PU,
charger controller, Battery Bank, inrerter, AC load/DC load panel
