상황
An off-grid solar cabin uses a 120V DC distribution panel fed by a PV array through an MPPT charge controller, with a battery bank for storage and multiple DC branch circuits for lighting, refrigeration, and electronics.
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01
Use 120V DC bus voltage for direct DC loads without inverter losses
02
Include MPPT charge controller between PV array and bus
03
Protect each branch with appropriately rated breakers
04
Connect battery bank to the bus through a dedicated breaker for isolation
Use this diagram when designing or documenting a small off-grid DC distribution system, particularly for solar-powered cabins or remote sites with 120V DC appliances.