Ensuring the quality of PV system components
Which of the following statements is correct?

Question

Ensuring the quality of PV system components 
 Which of the following statements is correct?

Answer

Assembly and installation of system components in the manner specified by manufacturers is often time-consuming and not really necessary.

Answer

Using PV modules, inverters and other system components which have quality certification is always recommended (where possible).

Answer

Regular system maintenance is more cost-effective than purchasing expensive certified system components.

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