Installation Guide

Figure 7Mounting the Charge Controller
¼"
Secure with two
more screws.
(6 mm)
Place keyhole slot
over the mounting
screw.
NOTE:When choosing a wall to install the solar charge controller, choose a wall that is
not considered a flammable material such as concrete, brick, or metal.
PV Grounding
You can configure the charge controller to be compatible with either negative-grounded,
positive-grounded, or ungrounded (floating) PV arrays. For information about routing the
array ground connection, see Figure 10.
Chassis Grounding
For ground conductor requirements for your specific installation, consult your local
electrical code. The recommended size of the chassis ground conductor is #8 AWG (10
mm2)
1
.
Internal Ground Fault Protection
The charge controller utilizes different ground fault protection for grounded and
ungrounded arrays. If the charge controller detects a ground fault, it ceases operating and
indicates a fault on the charge controller’s display and over the Xanbus network. The
charge controller is configured at the factory for an ungrounded PV array.
1
Based on the NEC (NFPA 70) Article 250 for 100 A maximum battery fuse.
Conext MPPT 80 and MPPT 100 Installation Guide Installation
29 This document is for use by qualified personnel 990-91319B