Residential grid-tied photovoltaic energy system design in Puerto Rico

In this paper we present a residential design of a grid-tied photovoltaic (PV) system, with no batteries and net metering agreement, installed in Puerto Rico's west coast. The design follows the National Electrical Code 2014 (NEC 2014) regulations. Calculations of general lighting, general loads and voltage drop are performed and dedicated circuits, conductors and conduits, overcurrent protection devices, panel board distribution are selected. A PV system capable of generating an annual average of 300 kWh per month is designed for the two-story dwelling unit.