Operation - Sunforce 12 Volt 30 Amp Digital Solar Charge Controller Installation & Operation Manual

2.6 Connect the Lead-Acid or Gel-cell battery negative side to the solar controller BATTERY
NEGATIVE – by a suitable wire.
Any wiring variation of size or length can affect the LCD meter performance
3. Wire size: - Refer to the "WIRE SIZE" chart below to determine the minimum size wire
needed for each connection. Note that the bigger the wire, the lower the AWG. When using
large stranded wire, you may need to divide the ends into two groups and straddle the screw
on the terminal block.
Length of Wire
AWG
4. Wire type: - When possible, use stranded wire instead of solid wire. Stranded wire does
not fatigue and cause loose connections over time as easily as solid wire. Use red wire for (+)
and black for ( ). Accept one wire at 6 AWG (stranded) or two wires at 8 AWG. Use crimp
–
connectors or connect the larger wire to a short, thinner wire using a wire nut (solder these
connections).
5. Connection diagram
CAUTION: Don't attempt to change the battery type selector switch after the controller
proceeds charging, otherwise will affect LCD meter reading.

6. OPERATION

After completed above connection, the solar controller charges the battery automatically. The solar
controller is based on three stage charging algorithm such as Bulk charge mode, Constant-voltage mode
(Based on maximum current)
Battery Connection
Distance round trip (meter)
< 0.6m
6 or 8
Solar Array Connection
Distance round trip (meter)
6m 9m 12m
10 8 6