Instruction Manual

Installation
2–10 975-0400-01-01 Revision H
This manual is for use by qualified personnel only.
Disabling Ground Fault Protection for Negative Grounded and
Ungrounded Arrays
To install the solar charge controller in a system where an external battery
negative-ground bond is required, or where a positive grounded battery, or
where the PV array must not be grounded, the solar charge controller internal PV-
GFP circuit and ground bond must be disabled. To disable the unit’s PV-GFP
circuit and ground bond, move the jumper connector located on the circuit board
within the wiring compartment and remove the 1A ground fault protection fuse.
See Figure 2-7.
Disabling the PV-GFP circuit in this way opens the negative-to-ground bond
within the unit. This provides the option of using an external PV-GFP circuit,
operating the Charge Controller with an ungrounded PV array, or grounding the
negative circuit of the battery elsewhere in the system.
NOTICE
EQUIPMENT DAMAGE
The factory default configuration of the solar charge controller will ground the
PV array negative to the chassis ground through the internal PV-GFP fuse.
Disable the PV-GFP circuit for ungrounded PV arrays.
Failure to follow these instructions can damage the equipment.
Figure 2-6 Charge Controller Safety Ground Connector
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect PV and battery circuits before accessing the Charge Controller
wiring compartment.
Failure to follow these instructions can result in death or serious injury.
Chassis ground terminals (2)
This symbol identifies
the protective
conductor (grounding)
connection.
Ground fault protection
fuse (behind wiring
terminals)