
Grounding
975-0239-01-01 4–11
This manual for use by qualified personnel only
Disabling Ground Fault Protection for Negative Grounded and
Ungrounded Arrays
To install the Xantrex XW SCC in a system where an external negative-ground
bond is required or where the PV array must not be grounded, the Xantrex XW
SCC internal Xantrex PV GFP circuit and ground bond must be disabled.
To disable the unit’s Xantrex PV GFP circuit and ground bond, move the jumper
connector located on the circuit board within the wiring compartment.
See Figure 4-7.
Disabling the Xantrex PV GFP circuit in this way opens the negative-to-ground
bond within the unit. This provides the option of using an external Xantrex PV
GFP circuit, operating the Xantrex XW SCC with an ungrounded PV array,
or grounding the negative circuit of the battery elsewhere in the system.
WARNING: Shock Hazard
Disconnect PV and battery circuits before accessing the Xantrex XW SCC
wiring compartment.
Figure 4-7 PV Negative Ground Jumper Location
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