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Multiple strings of solar modules are then combined together in parallel to multiply the string output currents to higher levels for input into the inverter. Thecombiner box is a device that combines the output of multiple strings of PV modules for connection to the inverter.

DCDB: Array Junction Box, DC Distribution BoxArray Junction Box (AJB) also known as DCDB (Direct Current Distribution Box), component of an electricity supply system which divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit.