NABCEP PV ASSOCIATE
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Which is the most important safety requirement for checking voltage?.
Answer: Wear proper PPE
◍ What kind of ground faults do most inverters detect?.
Answer: Dc
◍ Which of these would cause an interactive inverter to turn off for safety?.
Answer: Grid is out
◍ How can you ensure that you do not void the warranty of a tile roof when
installing a PV system?.
Answer: Follow instructions provided by roof manufacturer
◍ Which is the worst design error?.
Answer: Different tilt angles in a PV source circuit
◍ What is the proper slope of an extension ladder?.
Answer: 1:4
◍ A system that sits on a flat/low-slope rooftop and has no penetrations is
called a.
Answer: Ballasted system
◍ What do you often see in a solar service agreement (SSA) to ensure system
performance?.
Answer: Remote monitoring
◍ What will be increased by reflective surfaces (albedo)?.
, Answer: Current
◍ Which room cannot have a PV dc disconnect?.
Answer: Bathroom
◍ Best sealant for residential rooftop.
Answer: Polyurethane
◍ In California (west of the zero-degree isogonic line) the north needle of the
compass will point.
Answer: East of true North
◍ Voltage drop of conductors is based on:.
Answer: The length and diameter of the conductor
◍ If an array is facing south at equinox at noon, what must the tilt angle be in
order for the array to face directly at the sun at latitude 30?.
Answer: 30 degrees
◍ What is "blocking" used for?.
Answer: Attaching to a roof in a place where there is no rafter
◍ If you are going to work on the roof to fix a ground fault and the dc
disconnect is on the ground level, which of the following is the best safety
procedure?.
Answer: Lockout Tagout
◍ If an inverter indicates that there has been a ground fault, what is the first
thing that a O&M technician should do?.
Answer: Open all disconnects
◍ If doing an energy audit, which device is the best to replace to conserve
energy?.
Answer: New resistance heater
◍ Standard Testing Conditions (STC) temperature is:.
Answer: 25C Cell Temperature
◍ When handling PV modules on a roof in sunlight, what is the most common
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Which is the most important safety requirement for checking voltage?.
Answer: Wear proper PPE
◍ What kind of ground faults do most inverters detect?.
Answer: Dc
◍ Which of these would cause an interactive inverter to turn off for safety?.
Answer: Grid is out
◍ How can you ensure that you do not void the warranty of a tile roof when
installing a PV system?.
Answer: Follow instructions provided by roof manufacturer
◍ Which is the worst design error?.
Answer: Different tilt angles in a PV source circuit
◍ What is the proper slope of an extension ladder?.
Answer: 1:4
◍ A system that sits on a flat/low-slope rooftop and has no penetrations is
called a.
Answer: Ballasted system
◍ What do you often see in a solar service agreement (SSA) to ensure system
performance?.
Answer: Remote monitoring
◍ What will be increased by reflective surfaces (albedo)?.
, Answer: Current
◍ Which room cannot have a PV dc disconnect?.
Answer: Bathroom
◍ Best sealant for residential rooftop.
Answer: Polyurethane
◍ In California (west of the zero-degree isogonic line) the north needle of the
compass will point.
Answer: East of true North
◍ Voltage drop of conductors is based on:.
Answer: The length and diameter of the conductor
◍ If an array is facing south at equinox at noon, what must the tilt angle be in
order for the array to face directly at the sun at latitude 30?.
Answer: 30 degrees
◍ What is "blocking" used for?.
Answer: Attaching to a roof in a place where there is no rafter
◍ If you are going to work on the roof to fix a ground fault and the dc
disconnect is on the ground level, which of the following is the best safety
procedure?.
Answer: Lockout Tagout
◍ If an inverter indicates that there has been a ground fault, what is the first
thing that a O&M technician should do?.
Answer: Open all disconnects
◍ If doing an energy audit, which device is the best to replace to conserve
energy?.
Answer: New resistance heater
◍ Standard Testing Conditions (STC) temperature is:.
Answer: 25C Cell Temperature
◍ When handling PV modules on a roof in sunlight, what is the most common
