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Sample NABCEP Exam Questions The following questions are representative of the difficulty and scope of the type of questions that are on the NABCEP PV Installer Exam. These questions are provided to give those preparing for the exam an understanding of the type of questions that are on the exam. There is no guaranty that any problems on the NABCEP exam will match these questions. 1. A family of four is purchasing a 5 kW net-metered utility interactive PV system for their house which is located at 30°N latitude. The family members are out of the home regularly during the following hours: Father: 9 am - 5 pm Mother: 8:30 am - 12:00 pm Children: 8:00 am - 3:00 pm While the home is unoccupied, the energy use goes to near zero. There are no shade issues at the property; competing installation costs are equal, and the year round utility rate remains constant. Which of the following orientations will produce the most annual utility savings? a.) b.) c.) d.)
true south true southeast true southwest magnetic south
2. A PV array for a utility-interactive system is to be ground mounted on a hill 1,000 feet from the point of utility connection. The single string of PV modules operates between 300 and 550 volts dc. The inverter is a 240 V inverter. There is a small building halfway between the array location and the utility point of connection. To minimize wire size, increase performance, and ensure consistent operation, where should the inverter be installed? a.) b.) c.) d.)
At the PV array At the midpoint building At the utility point of connection Midway between the PV array and the building
3. Of the following site assessment tools, which are MOST OFTEN NEEDED to determine optimal array placement? a.) b.) c.) d.)
compass, level, and anemometer compass, inclinometer, and irradiance meter compass, digital camera, and multimeter compass, inclinometer, and sun path analyzer
156 • NABCEP PV Installation Professional Resource Guide
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