Charging Only One Battery; Charging Two Batteries - Dometic 30AMP PWM User Manual

WIRING DIAGRAMS

7.1 CHARGING ONLY ONE BATTERY

Use the following wiring diagram if you are using the GP-PWM-30-UL to charge only one battery. Connect your battery to the battery
1 terminals on the solar controller.
The fuse or breaker
used should be no larg-
er than 50 amps
The controller will not work unless there is a battery connected to the Battery 1 terminals.
Note
WARNING: When the photovoltaic (solar) array is exposed to light, it supplies a dc voltage to this equipment.

7.2 CHARGING TWO BATTERIES

Use the following wiring diagram if you are using the GP-PWM-30-UL to charge two separate battery banks. Connect battery bank 1
to the battery 1 terminals and battery bank 2 to the battery 2 terminals on the back of the solar controller.
IMPORTANT: Ensure your primary/permanent battery (house bank) is connected to the battery 1 terminals. Connect your secondary
battery to battery 2 terminals only. Your permanent battery (battery 1) will receive the full current first. Once battery 1 is fully charged,
current will be available to charge battery 2.
The controller will not work unless there is a battery connected to the battery 1 terminals.
Note
Optional
The fuse or breaker used should be no larger than 50 amps
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