Accessing the Wiring Terminals

WARNING: Shock hazard

Do not remove the wiring/disconnect box. The 600 volt DC/AC disconnect in the wiring box meets NEC Article 690. It is a non-serviceable component and shall remain in place. Removal can expose energized conductors.

Use caution when working around sources of DC power. Although the DC/AC disconnect switch disconnects the inverter from DC power, hazardous voltages from paralleled PV strings will still be present upstream of the switch and inside the wiring box. To reduce the risk of shock during installation, cover the array with an opaque (dark) material before making any connections, and always test for voltage before touching exposed wiring or devices.

Accessing the Wiring Terminals

You must remove the GT Inverter wiring box cover to access the terminal blocks, ground bar and communications ports.

To remove the wiring box cover:

•Using a Phillips screwdriver, remove the two screws on the bottom side of the wiring box and lift the cover off the wiring box (see Figure 3-3).

Wiring box cover screws

 

Figure 3-3Removing the Wiring Box Cover

 

AC and DC connections are made at the wiring terminals shown in Figure 3-5.

Insulating barrier

The clear plastic insulating barrier inside the wiring box is a permanent

 

component. It is intended to separate the high-voltage AC and DC wiring from

 

any communications cabling.

 

When wiring the unit, it is necessary to pull the barrier back to access the wiring

 

terminals. See Figure 3-4. After completing the wiring, return the insulating

 

barrier to its original position.

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