Owner`s manual

20 | P a g e
Chassis Grounding
In all installations the Classic chassis should be connected to ground. For systems with a battery
breaker sized 60 amps and smaller 10 AWG (6 mm
2
) copper is generally sufficient. For systems with a
battery breaker sized 100 amps and smaller 8 AWG (10 mm
2
) copper is required. For grounding
conductor requirements on your specific installation please consult your local electrical code. The
chassis grounding terminal is in the upper right corner of the electrical connection compartment see
DC System Grounding
The Classic charge controller is designed to work with Negative Ground, Positive Ground or
Ungrounded power systems. In grounded systems, dc negative may be connected to ground either
externally or by using the Classic’s internal grounding jumper, shown on figure 2.1. The internal
grounding jumper should only be installed when the Classic’s GFP is enabled. In a system with
multiple charge controllers the grounding jumper should be installed on every charge controller. In
Positive ground or Ungrounded systems the GFP jumper must be removed. See Figure 2.1 Also note
that with Positive ground there will be items still referenced to battery negative that can complete a
short circuit of the battery bank. These items include but are not limited to the USB Cable and the
Ethernet jack. Please contact Technical support for assistance on Positive ground systems.