Maintenance; Fusing - Renogy ROVER PG Série Manuel D'installation Et D'utilisation

Risk of Electric Shock! Make sure that all power is turned off before touching the
WARNING
terminals on the charge controller.
For best controller performance, it is recommended that these tasks be performed from time to time.
1. Check that controller is mounted in a clean, dry, and ventilated area.
2. Check wiring going into the charge controller and make sure there is no wire damage or wear.
3. Tighten all terminals and inspect any loose, broken, or burnt up connections.
4. Make sure LED readings are consistent. Take necessary corrective action.
5. Check to make sure none of the terminals have any corrosion, insulation damage, high
temperature, or any burnt/discoloration marks.
Fusing is 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
Max.
Current
Note: The NEC code requires the overcurrent protection shall not exceed 15A for 14AWG, 20A
for 12 AWG, and 30A for 10AWG copper wire.
Controller to Battery Fuse = Current Rating of Charge Controller
Ex. 20A MPPT CC = 20A fuse from Controller to Battery
Different safety factors could be used. The purpose is to oversize.
NOTE
Total Amperage= Isc1 = Isc2 * SF
= 5.75A * 1.56 = 8.97
Fuse = 9A fuse
EN

Maintenance

Fusing

16 14 12
18A 25A 30A
Fuse from Controller to Battery
Fuse from Solar Panel(s) to Controller
Ex. 200W; 2 X 100 W panels
**Utilize 1.56 Sizing Factor (SF)
Series:
10 8 6
40A 55A 75A 95A
Total Amperage= (Isc1 + Isc2) * SF
=(5.75A + 5.75A)* 1.56 = 17.94
Fuse = 18A fuse
4 2 0
130A 170A
Parallel
26