Filter
Top Products
Maintenance and Troubleshooting
6–6 975-0320-01-01
Replacing the Inverter
If your GT Inverter requires servicing, you can replace it with another inverter,
leaving the existing wiring box in place. This means that you do not have to
disturb wiring connections in the wiring/disconnect box. However, you do have to
disconnect wiring between the inverter and the wiring/disconnect box.
Recommended tools:
• Insulated screwdriver
• Wire nuts
• 7 mm socket and small ratchet, or 7 mm open wrench.
To remove the inverter from the wiring box:
1. Turn OFF the breaker switches in the main utility service panel and the
DC/AC Disconnect switch on the GT Inverter. Disable the output of the PV
arrays by covering them with an opaque material.
2. Remove the wiring/disconnect box cover and the display front panel cover
(see Figure 3-3 on page 3–5 and Figure 6-2 on page 6–5).
WARNING: Shock hazard
• Replacing the inverter according to these procedures should only be performed by
qualified service personnel, such as a certified electrician or technician.
• Separating the inverter from the wiring box breaks the ground path between the
grounded conductor and earth ground. When the wires between the inverter and wiring
box are disconnected and exposed, both PV leads are floating at the array open circuit
voltage. If there is leakage current from the POSITIVE PV lead to ground at the array,
touching the NEGATIVE PV lead could cause a life-threatening shock even with the
disconnect switch turned off. Ungrounded DC current within the inverter presents an
extreme shock hazard.
• Cover PV arrays with an opaque material during this procedure.
• Use insulated tools only when disconnecting wires between the inverter and wiring
box. Cap all disconnected wires with wire nuts.
i
WARNING: Shock hazard
The inverter should only be removed from the wiring box when a replacement inverter is
immediately available. When replacing an inverter, ensure the DC/AC Disconnect switch
is locked (or otherwise secured) in the OFF position. Do not leave the top of the wiring
box exposed for extended periods of time.
WARNING: Shock hazard
Before replacing the inverter, turn OFF the breaker switches in the main utility service
panel and the DC/AC Disconnect switch on the GT Inverter. Cover the PV arrays with an
opaque material.