4. The electrical diagram for the PV system should include which of the following?
(Select three.)
A. Weather report for week of installation
B. Exact wiring distance for the string wiring
C. Position of the inverter
D. PV junction box
E. Shading analysis from the building
5. Where should inverters be located?
A. Dry places
B. Temperature-controlled places
C. Damp, humid places
D. A and B only
E. None of the above
6. For the best performance, PV arrays should get full sun, especially between the hours of:
A. 8 a.m. and 4 p.m.
B. 6 a.m. and 6 p.m.
C. 3 p.m. and 9 p.m.
D. 12 p.m. and 2 p.m.
7. How long after turning a PV system on should you wait before capturing performance data?
A. 5 minutes
B. 15 minutes
C. 24 hours
D. 7 days
8. The rated output of the PV system needs to be within what percentage of the projected AC?
A. 75 percent
B. 85 percent
C. 90 percent or higher
D. 98 percent
9. Which statements describe good practice in laying cables and placing conductors? (Choose
any and all that apply.)
A. Conductors should be located in shaded areas, away from rainwater runoff, snow,
and ice.
B. Cables should be kept out of reach of children and animals.
C. It’s always good to have plenty of excess cabling in an installation because you never
know when you’ll need the extra for repairs in hard-to-reach locations.
D. Double insulation is a good idea for systems being installed in relatively cool climates,
but is unnecessary in most locations.
CHAPTER 1 Introduction to Advanced Photovoltaic System Installation 21
10. Which statements are true of the placement of inverters in residential and
commercial buildings? (Choose any and all that apply.)
A. Placing inverters in either type of building can produce additional heat.
B. In a cold climate, extra heat from an inverter can be a good thing.
C. In a moderate or warm climate, such extra heat will require venting or
additional cooling.
D. Placing two inverters one on top of the other in a space that is not air
conditioned will raise the temperature of the upper unit, reducing its
efficiency.
22 ADVANCED PHOTOVOLTAIC INSTALLATIONS
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