Installation Guide

Wiring
The following sections provide information about wiring.
Connector Locations
Terminal connectors for DC wiring are located inside the wiring compartment. Labels
above the DC wiring terminals identify all the connection points. See Figure 9.
Figure 9DC Terminal Connector Locations
BATTERY
+
_
NEG. GND PV.
PV- PV+
POS. GND PV.
XANBUS XANBUS BTS AUX
TERMINAL TORQUE
25 lbf.in (2.8 Nm)
15 lbf.in (1.7 Nm)
TERMINAL TORQUE
A label providing details on each connector and torque requirements for each terminal is
affixed to the inside of the wiring compartment cover plate.
Wire Size and Over-current Protection Requirements
WARNING
HAZARD OF ELECTRIC SHOCK, ENERGY, AND FIRE
The wiring, over-current protection devices (fuses and circuit breakers), and installation
methods used must conform to all applicable code requirements. Wiring must be protected
from physical damage with appropriate methods such as the use of conduit and strain relief
clamps. To prevent intermingling with hazardous voltage-level wiring, the BTS, auxiliary
output, and network cables must pass through a different conduit than the PV and battery
cables.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
PV Current Rating and Wire Gauge
The minimum wire size is determined by the specific installation, in particular, the short
circuit current available from the panel array. It is important that a qualified installer
determine the correct wire size for the specific installation and the local electrical codes.
The wire temperature rating (for the purpose of ampacity calculation) must not exceed
75°C (167°F) in order to maintain compatibility with terminal blocks, breakers and
disconnects.
Conext MPPT 80 and MPPT 100 Installation Guide Installation
31 This document is for use by qualified personnel 990-91319