NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:
1. Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?
A) Tagging
B) Conduct stickers
C) Insulation type
D) Placards
2. A PV module shows burn marks near the junction box. What is the most likely cause?
A) Overcurrent condition
B) Loose connection
C) Lightning strike
D) Ground fault
3. A PV system requires labeling per NEC 690.56. Which of the following must be posted at the point of interconnection?
A) "Do Not Disconnect Under Load"
B) "Maximum AC Voltage"
C) "PV System Disconnect"
D) "Warning: Dual Power Sources"
4. A 10 kW PV array uses 300W modules with a Voc of 40V and an Isc of 9A. The inverter has a maximum DC input of 600V and 25A. What is the maximum number of modules that can be connected in a single string?
A) 12
B) 16
C) 14
D) 15
5. A site survey indicates a residential roof with a 4:12 pitch facing 20° east of south. The local latitude is 35°N, and the optimal tilt for maximum annual production is equal to latitude. What adjustment should be made to compensate for the roof's orientation and tilt to achieve near-optimal output?
A) Increase array capacity by 5%
B) Rotate modules 20° west to face true south
C) No adjustment needed; output loss is negligible
D) Install adjustable racking to match 35° tilt
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: D | Question # 5 Answer: D |

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