1. What is the exact best direction for photovoltaic modules/panels to face?
2. What is the one best angle for photovoltaic modules/panels to be mounted at for best year-round output?
3. What functions does the inverter perform?
4. What is 'islanding'?
5. What are the main components of a residential photovoltaic system, all components between the roof and the home's service panel?
Most persons failing the tests are not failing because of lack of basic contractor or electrical knowledge. They are failing because of lack of photovoltaic (inverters, panel differences, directions and angles) knowledge.
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