Full Product Manual

22
Fusing
Fusing is a recommended in PV systems to provide a safety measure for connections going from
panel to controller and controller to battery. Remember to always use the recommended wire
gauge size based on the PV system and the controller.
NEC Maximum Current for different Copper Wire Sizes
AWG
16
14
12
10
8
6
4
2
0
Max.
Current
10A
15A
20A
30A
55A
75A
95A
130A
170A
Fuse from Controller to Battery
Controller to Battery Fuse = Current Rating of Charge Controller
Ex. 30A ViewStar CC = 30A fuse from Controller to Battery
Fuse from Solar Panel(s) to Controller
Ex. 200W; 2 X 100 W panels
Series:
Total Amperage = I
sc1
= I
sc2
= 5.75A * 1.56
Fuse = minimum of 5.75A * 1.56 = 8.97A = 9A fuse
Parallel
Total Amperage = I
sc1
+ I
sc2
= (5.75A + 5.75A) * 1.56
Fuse = minimum of 11.5 * 1.56 = 17.94 = 18A fuse