Replacing Parts
975-0131-01-01 6–5
Replacing the Inverter
You can swap out the inverter and replace it with another GT Inverter, leaving the
existing wiring box in place. This means that you do not have to disturb wiring
connections in the wiring box. However, you do have to disconnect wiring
between the inverter and the wiring box.
Figure 6-1
Location of Fuse, Front Panel Cover Removed
Ground Fault
Protection Fuse LCD
WARNING: Shock hazard
Separating the inverter from the wiring box breaks the ground path betwe en PV
NEGATIVE (–) and earth ground. When the wires between th e inve rter and wiring box
are disconnected and exposed, both PV leads ar e floating at the a rray open circui t v oltage .
If there is leakage current from the POSITIVE PV lead to gr ound at t he array, touching the
NEGATIVE PV lead could cause a life-thr eate ning shock even wit h the disconn ect s witch
turned off. Ungrounded negative DC current on the PV NEGATIVE (–) wire presents an
extreme shock haz ard.
Use insulated tools only when disconnecting wires bet ween the inverter and wiring box.
Cap all disconnected wires with wire nuts.
If possible, cover PV arrays with an opaque material during this procedure.