Specialty Concepts SC3/15 - Manual (Page 7)

INSTALLATION INSTRUCTIONS (continued)
8. REMOVE POWER FROM BATTERY / PANELS: - Disconnect power from the batteries
and panels prior to running the wires to the controller.
9. RUN SYSTEM WIRING: - After disconnecting the power sources, run the wires from the
battery and solar panel to the location selected for the controller.
WALL MOUNT: Run the array and battery wires into the box through the knockouts,
using a 1/2 inch Romex cable clamp for strain relief.
10. NOTE WIRE POLARITY: - Make sure to correctly mark the polarity of the wires using
colored wires or tags. Incorrect polarity may blow the front panel fuse or damage the
SC3/15. Some vehicles or solar kits use black and white wires for connection to the
battery. These kits will label the white wire as battery negative and the black wire as
battery positive. Black and red wiring systems will label the black wire as negative and
the red wire as positive. When these systems interconnect, the black wire does not
connect to the black wire. CAREFULLY NOTE BATTERY POLARITY AND WIRE
COLORS!
11. SC3/15 CONNECTION: - Wire the SC3/15 according to Figure 1. (Units with Option-E
should refer to Figure 2 and the OPTIONS section). When possible, solder the wires
before installing the wire nuts, then wrap the wire nuts and wires with electrical tape.
12. INSTALL OPTIONS: - If included
TEMPERATURE COMPENSATION (OPTION A): - Refer to OPTIONS section.
WALL MOUNT: Run the temperature compensation cable through the holes in the
knock-out box.
LOW-VOLTAGE DISCONNECT (OPTION-E): - Refer to Figure 2 to complete the
load connection for low-voltage load disconnect. Refer to OPTIONS section.
13. SC3/15 MOUNTING: - Mount the SC3/15 to the wall or box front using the four screws
provided or other suitable fasteners. Slip the washers (supplied) over the screws so the
washers are between the back of SC3/15 and the wall (or box). This provides an air gap
for added cooling. INSTALLATION OF THESE WASHERS IS REQUIRED FOR
PROPER COOLING DURING OPERATION.
14. INSTALL FUSING AS NEEDED: - Add circuit protection where needed. A 15 amp
fuse and disconnect switch should be installed on the Battery (+) run of the SC3/15.