chapter 6
Strings, Wire Sizing, and protection
PHOTOVOLTAIC (PV) SYSTEMS GENERATE electricity. What is important for you to clearly grasp is the relationship between the PV panels and strings and how they interact with the inverter. In design, you are tasked with either designing for the National Electrical Code (NEC) or designing beyond the Code for high-performance PV system output.
In designing for the Code, you will use string sizers to meet the 2011 Code requirements. For high-performance systems, you will design to meet the higher standard of staying within the Maximum Power Point Tracking (MPPT) voltage and current window. This takes additional attention to detail and research. We will address the importance of understanding the differences ...
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