Installation & Operation - Samlexpower SCC-30AB Owner's Manual

SECTION 6 |
WARNING!
ENSURE that the battery + and - wires are correctly connected before
•
proceeding.
• Damage due to reverse battery connection is not covered under warranty!
• When connecting the battery, connect the battery Negative first & then the
battery Positive.
When disconnecting the battery, disconnect battery Positive first & then battery Negative.
Installation Steps
Wire Sizing – Solar Panel to Controller and Controller to the Battery
Wiring should be sized as recommended in the Table below:
Current, A
Up to 10
11A to 20A
21A to 30A
NOTES:
• Running distance is the actual distance taking into consideration the complete
circuitous route followed by the wires for installation. Both the length of
Positive and Negative cables.
• Current is the total Short Circuit Current Isc of the Solar Panel / Array.
For SCC-30AB, maximum continuous current allowed is 30A.
• If the actual running distance does not match distance shown, base the wire
size for the next higher distance. For example, if Isc is 15A and running
distance is 18ft, use AWG # 8 for 12 ft.
This section provides a brief overview of how to get started using the SCC-30AB
controller. However, please review the entire manual to ensure best performance and
years of trouble-free service.
NOTES:
• SCC-30AB prevents reverse current leakage at night through an internal MOSFET
Switch, so an external Blocking Diode is not required in the system.
• Connecting wires should be sized to limit voltage drop from 2% to 3%.
• Tighten each terminal clamping screw to 20 inch-pounds of torque.
• SCC-30AB is designed to regulate power from a PV array. Other chargers can be
connected directly to the battery with no effect on SCC-30AB.
34 | SAMLEX AMERICA INC.
Installation & Operation
#12 #10
Controller to Solar Panel or Controller to Battery
15 30
10 15
- 10
Table 6.1. Maximum length of cable
Wire Size in AWG
#8 #6
Running Distance in ft.:
40 80
20 40
15 25
#4 #2
120 130
60 100
40 60