Xantrex Technology XM 1000, XM 1800 AC Wiring, 3Required AC wire size vs. required breaker rating

Installation

AC Wiring

You can plug loads (12 A continuous, 15 A maximum) directly into the GFCI receptacle on the front panel of the XM 1800. You can also connect the inverter to an existing AC circuit and then plug loads into GFCI receptacles connected to that circuit.

If you plan to use the XM 1800 with the GFCI already installed on the unit, proceed to “Connecting the DC Cables” on page 3–22.

If you plan to hardwire the XM 1800 AC input and output to an existing AC circuit, read this section.

AC wiring includes all the wires and connectors between the AC source and the inverter and all wiring between the inverter and the GFCIs. The type and size of the wiring varies with the installation and load. For some RV applications, flexible multiple-strand wire is required. For residential installations, solid Romex™ cable is often used. Installation codes may specify solid or stranded, overall size of the conductors, and type and temperature rating of the insulation around the wire.

AC wiring must be sized to match the current rating of the AC breakers you provide on the input and output AC circuits in accordance with the electrical codes or regulations applicable to your installation. Table 3-3 is based on the U.S. National Electrical Code and the Canadian Electrical Code, assuming 2-conductor-plus-ground cable. Other codes and regulations may be applicable to your installation.

Table 3-3Required AC wire size vs. required breaker rating

	Required Breaker Size	Required Wire Size
XM 1000	15 A maximum	14 AWG
XM 1800	20 A maximum	12 AWG

There are two knockouts on the front panel for AC input and output wiring. Use the supplied strain reliefs to prevent wires from being pulled out once wiring is completed.

CAUTION: Equipment damage

The AC wiring terminal block is split into input and output sections. Damage to the inverter will occur if the unit is wired incorrectly.

3–14 975-0263-01-01