Xantrex Technology GT3.0 To wire the PV array to GT Inverter, 1Torque Values for Wires

Connecting the DC Wiring

To wire the PV array to GT Inverter:

1.Install DC conduit from the PV string(s) to the GT Inverter wiring box, through one of the knockout holes.

2.Remove the wiring box cover (see page 3–2).

3.Route the wires from the PV string(s) through the conduit and into the wiring box.

4.Connect the DC Ground from each PV string to the GROUND bar in the wiring box.

5.Connect the POSITIVE (+) wire from the #1 PV string to the

PV1 (+) terminal. Double check that the wire is in the proper location and tighten the screw.

6.Connect the NEGATIVE (–) wire from the #1 PV string to the

PV1 (–) terminal. Double check that the wire is in the proper location and tighten the screw.

7.Repeat for the #2 PV string, if there is one. Double check that the wires are in the proper locations and tighten the screws:

a)Connect the POSITIVE (+) wire from the #2 PV string to the PV2 (+) terminal.

b)Connect the NEGATIVE (–) wire from the #2 PV string to the PV2 (–) terminal.

8.Ensure all connections are correctly wired and properly torqued according to values shown in Table 3-1.

Table 3-1Torque Values for Wires*

	Wire Size			Torque
AWG		mm2	in-lb		Nm
14 to 10		2.5 to 6.0	35		4.0
8		10.0	40		4.5
6		25.0	45		5.1

*Use copper conductors only.

975-0131-01-01 3–5