ABSTRACT
This chapter applies to solar photovoltaic (PV) systems, other than those covered by Article 691, including the array circuit(s), inverter(s), and controller(s) for such systems. The writers of the National Electrical Code left the dc-to-dc converter definition open-ended for solar professionals billion-dollar invention. 2020 dc-to-dc converters are usually one for every module, rather than several modules per converter in this image. Dc-to-dc converter source and output circuits are like PV source and PV output circuits; however, they are dc-to-dc converters connected together rather than PV modules. A device, such as an inverter, dc-to-dc converter or electronic charge controller, which can limit current capabilities based on the device ratings at continuous rated power. A PV source circuit consists of the dc circuit conductors between modules and from modules to dc combiners, electronic power converters or a dc PV system disconnecting means.
