What is a common failure point in DIY builds concerning the charge controller?
Answer
Under-sizing the charge controller relative to the panel wattage
When individuals attempt DIY setups without the benefit of pre-matched kits, improper sizing is a frequent source of failure or inefficiency. A specific risk mentioned relates to the charge controller capacity relative to the solar array size. If the charge controller is under-sized, it will be unable to safely manage the maximum potential output, specifically the maximum short-circuit current generated by the panels during peak sun. This mismatch can lead to wasted energy production or, critically, potential physical damage to the controller itself due to overload.
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