Installation Guide

n For positive-grounded systems, the PV array disconnect switch must be in the
negative conductor.
n For floating systems, the PV array disconnect switch must be a 2-pole type
disconnect, connected in both the positive and negative conductors as per applicable
electrical code in the United States and Canada.
In general, the same rules apply for disconnect switches as for battery circuits: they
must be located in all ungrounded conductors. Requirements vary so consult applicable
codes.
NOTICE
DAMAGE FROM LIGHTNING
To protect the charge controller’s insulation and conductors from damage due to a sudden
over-voltage surge such as a lightning strike, install a DC-rated lightning arrestor on the DC
input line.
Failure to follow these instructions can result in equipment damage.
NOTE:
n The positive or negative of the battery can be grounded independent of the array
grounding.
n Grounding and disconnect locations will vary according to system design and local
electrical codes.
Conext MPPT 80 and MPPT 100 Installation Guide Installation
35 This document is for use by qualified personnel 990-91319