Renogy Off-Grid Kit, General Manual

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Figure 6.4 Completed 12V off-grid system
Figure 6.4 shows the complete wiring of a typical off-grid system. It includes fuses for safety
and protection. This configuration shows only one panel and one battery connected to the
controller. In
Sections 8 and 9, more panel and battery configurations (respectively) will be
described. Instructions will follow.
24V wiring
7.1 General information
In this section we will show the basic connections for a 24V battery system. Please follow them
thoroughly.
Caution!
The batteries must first be wired to the charge controller before the solar
panel is connected to the charge controller.
As we mentioned in last
Section , the battery bank must first be connected to the charge controller
before any other connections are made. This will allow the controller to set the 24V charging
parameters automatically.
Before starting the connections keep in mind the following:

The charge controller should be as close as possible to the batteries. This helps keeping
line loss to a minimum level.

Remember to always use the recommended gauge size based on the total input
current. The PWM 30A LCD controller can handle gauges up to 6 AWG.
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