NABCEP PV ASSOCIATE EXAM

NABCEP PV ASSOCIATE EXAM

QUESTIONS & ANSWERS LATEST

UPDATE

• What kind of ground faults do most inverters detect?
• Ac
• Dc
• Both Ac and Dc
• Neither

Correct Answer: B - Dc

• Which is the worst design error?
• Using microinverters on a complex roof
• Slightly under sizing the inverter
• Different tilt angles in a PV source circuit
• Facing the array slightly west of true south

Correct Answer: C - Different tilt angles in a PV source circuit

• What is "blocking" used for?
• Preventing reverse current in a circuit
• Shading mitigation
• Overvoltage protection
• Attaching to a roof in a place where there is no rafter

Correct Answer: D - 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?

• Wear rubber gloves
• Turn off the AC breaker only
• Lockout Tagout
• Cover the array with a tarp

Correct Answer: C - Lockout Tagout

• If an inverter indicates that there has been a ground fault, what is the first

thing that an O&M technician should do?

• Reset the inverter
• Open all disconnects
• Call the utility company
• Spray water on the array to clean it

Correct Answer: B - Open all disconnects

• If doing an energy audit, which device is the best to replace to conserve

energy?

• LED lightbulbs
• Energy Star refrigerator
• Ceiling fan
• New resistance heater

Correct Answer: D - New resistance heater

• When handling PV modules on a roof in sunlight, what is the most common

method of safety of the following?

• Short the leads together
• Ground the positive lead
• Make sure that connectors are open
• Wear a welding mask

Correct Answer: C - Make sure that connectors are open

• In the western part of the USA and Canada, what direction does the north

arrow of a magnetic compass point?

• West of north
• East of north
• True north
• South

Correct Answer: B - East of north

• Which tilt angle from horizontal would get the best annual production from a

location in Toronto at 43 degrees north?

• 15 degrees
• 30 degrees
• 42 degrees
• 60 degrees

Correct Answer: C - 42 degrees

• If someone had a snow lodge with a wall facing south, what would be the

best argument for increasing tilt to very steep or even vertical on the wall?

• To shed snow faster

• To reduce wind load
• To increase production from reflection off the snow
• To make the installation physically easier

Correct Answer: C - To increase production from reflection off the snow

• If magnetic declination is 5 degrees east, then where is true south?
• Where the compass reads 170 degrees
• Where the compass reads 175 degrees
• Where the compass reads 180 degrees
• Where the compass reads 185 degrees

Correct Answer: B - Where the compass reads 175 degrees

• Which type of system is best for seasonally tilting the PV modules?
• Flush roof mount
• Ballasted roof mount
• Pole mount

D. BIPV

Correct Answer: C - Pole mount

• What causes the skin to be more conductive and dangerous when working

with electricity?

• Dryness
• Sunscreen
• Cold temperatures
• Moisture

Correct Answer: D - Moisture