Please pay close attention to the following wire specifications
Wire Size
Refer to the “WIRE SIZE” chart below to determine the minimum size wire needed for each
connection. When using heavy stranded wire, you may need to divide the ends into two groups
and straddle the screw on the terminal block.
WIRE SIZE
Battery Connection Distance Round
Trip
Solar Array Connection Distance Round
Trip
Length of
Wire
not more than 0.6m (2ft)
6m (20ft)
9m (30ft)
12m (40ft)
AWG
6 or 8
10
8
6
Wire Type
It is better to use a stranded wire than a solid wire. Stranded wire does not fatigue and cause loose
connections over time as easily as solid wire. Use red wire for positive (+) and black wire for negative (-
). One 6 AWG wire (stranded or two 8 AWG wires are suitable. It is best to connect the wires to the
controller using crimped connectors. Ensure tight connections.
Any variation of wire size or length will affect the performance of the charge controller.
Operation
Once properly mounted and connected the charge controller will start charging immediately given
adequate solar power. The 12 Volt 30 Amp Solar Charge Controller is based on a three stage charging
algorithm, Bulk Charge Mode, Constant Voltage mode and Float Mode.
Battery condition is indicated by the LED lights. The controller will indicate the battery condition in three
states: GOOD (green), FAIR (yellow), LOW (red). Please refer to label.
Please note the charge controller is not able to start the charging process if the initial battery voltage is
less than 5 volts (+/- 0.3).
Monitoring
LED Indicator lights – please refer to label.
The top 3 LED indicator lights show the charging status of the charge controller.
The
icon (red LED) indicates solar power available
ON: indicates solar panel properly connected and solar power supplied within normal
expectation.
OFF: indicates no power available or insufficient voltage to activate controller.
The
icon (blue LED) indicates the charge controller is in “Bulk Charge” mode
