Alternating Current Photovoltaic Building Block

Today's photovoltaic power systems are generally comprised of a single photovoltaic module or multiple modules connected by combinations of series and parallel circuits as a photovoltaic array. In the case of a single-module system producing alternating current (AC) power output, the photovoltaic module is connected to the inverter or load through a junction box (J-box) that incorporates a fuse to protect the photovoltaic module if backfeeding from other sources (e g; a power utility or a battery) is possible. The photovoltaic modules used in these systems are configured either with or without a frame. Frameless photovoltaic modules are generally referred to as a laminate. For conventional systems that utilize multiple laminates or modules, the laminates or modules are interconnected via junction boxes or flying leads and external wiring that must be rated sunlight-resistant and sized to carry the rated currents. Some conventional photovoltaic system installations require that the direct current (DC) and AC wiring be installed in properly sized and anchored conduit.