A 15 kW system has a total derate factor of 0.90. After 5 years, output drops by 2% annually due to degradation. What is the AC output in year 5?

• A.12.2 kW
• B.11.5 kW
• C.12.9 kW
• D.13.5 kW

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A maintenance inspection reveals cracked module glass. What is the immediate action?

• A.Monitor performance
• B.Apply sealant to cracks
• C.Disconnect the string
• D.Replace the module

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An 8 AWG bare copper equipment ground conductor (EGC) is wire tied to the module mounting structure of a commercial rooftop solararray. After a few years of operation, some spots on the EGC begin to turn a green color and appear to be corroding more significantly that other places. What would the MOST likely cause of the problem?

• A.A break in the EGC, leaving the array ungrounded
• B.Array racking touching the EGC at multiple points
• C.Nyton wire ties in contact with the copper wire
• D.Bypass dlode failures inducing current on the EGC

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A 5 kW PV system has a derate factor of 0.82. The site receives 5.5 PSH daily. What is the expected daily AC energy output?

• A.20.5 kWh
• B.27.5 kWh
• C.22.55 kWh
• D.25.0 kWh

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A rooftop PV system is proposed for a commercial building with a membrane roof. The structural engineer specifies a maximum allowable dead load of 5 psf. The PV modules weigh 3 psf, and the racking adds 1.5 psf.
What additional load can be added without exceeding the limit?

• A.1.0 psf
• B.0.5 psf
• C.0 psf
• D.1.5 psf

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