Dc And Ac Wiring For Multiple Inverters - Xantrex GT2.5-NA Owner's Manual

Wiring the Inverter

DC and AC Wiring for Multiple Inverters

Connecting DC
wiring
Connecting AC
wiring
3–10
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The following procedures are illustrated in Figure 3-7. The illustration and
instructions assume only two inverters, but in fact up to ten inverters can be
installed and networked together.
If there will be more than one PV array, label the positive and negative wire pairs
appropriately (for example: PV1 POS, PV1 NEG, PV1 GND, PV2 POS, etc.).
To wire the PV array to multiple GT Inverters:
1. Remove the wiring box cover from each unit (see page 3–2).
2. Install the DC conduit from the PV arrays to the GT Inverter wiring boxes,
through appropriate knockout holes. Metal conduit is highly recommended.
3. Route the wires from each PV array through the conduit and into the wiring
box of the unit intended for that PV array.
4. Connect the DC Ground from each PV array to the GND bar in the wiring box
of the unit intended for that PV array. Do not combine array ground wires.
5. Follow the instructions on page 3–4 for connecting POSITIVE (+) and
NEGATIVE (–) wires from each PV array to each GT Inverter.
6. If required by the AHJ, a DC grounding conductor may be connected to each
inverter's ground bar. One inverter will connect to a common grounding
conductor. The other inverters will use tap connectors. Connection is then
made to the DC or AC grounding electrode as per NEC 690.47.
7. Ensure all connections are correctly wired and properly torqued according to
values shown in Table 3-1 on page 3–5.
To wire the main utility service panel with multiple GT Inverters:
1. Run conduit from the main utility service panel to the wiring boxes of the GT
Inverters.
2. Follow the instructions on page 3–7 for connecting L1 and L2 HOT wires and
ground wire from the main utility service panel to each GT Inverter.
3. Ensure all connections are correctly wired and properly torqued according to
values shown in Table 3-1 on page 3–5.
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