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NABCEP PRACTICE EXAM QUESTIONS Exam Prep Questions And Answers ()
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NABCEP PRACTICE EXAM QUESTIONS Exam Prep Questions And Answers (202472025) An off -grid installation has a 1HP pump that is on 10% of the time and a 20W light that is on 100% of the time. What is the energy use per month? - ✔✔68kWh - ✔✔ What kind of ground faults do most inverters detect? - ✔✔DC - ✔✔ Current carrying ability of a conductor (wire) is called... - ✔✔Ampacity - ✔✔ According to ohms law and voltage drop, the relationship between voltage and current is... - ✔✔Proportional - ✔✔ An array in sacramento California in August is not producing as expected. Which of the following is a likely problem? - ✔✔Decreased ac wire size and voltage loss - ✔✔ When using a digital multimeter, what is the first thing you should do? - ✔✔Inspect the meter - ✔✔ Which is the worst design error? - ✔✔Different tilt angles in a PV source circuit - ✔✔ The low design temperature is -20 degrees celsius and the Voc temperature correction factor for your PV is -0.34%/degrees celsius. The characteristics of your module are Isc = 8A, Voc = 29V. How many modules can you put in the series for an inverter that cannot go over 500V? ( -20°C - 25°C = -45°C) ( -45°C × -0.34%/°C = 15.3% increase Voc) (1.15 × 37Voc = 42.6V cold) (500V/42.6V= ?) - ✔✔11 (11.7) - ✔✔ MPPT is for... - ✔✔optimizing power from a PV array - ✔✔ Concentrated PV... - ✔✔only works with direct sunlight - ✔✔ Fall protection should be used at heights over... - ✔✔6 feet - ✔✔ Parallel PV circuit connections increase... - ✔✔current - ✔✔The benefits of buying summaries with Stuvia:
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