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IMPORTANT: Field wiring DC terminals tightening torque 12-13 Nm
• Connect a negative DC input cable between the unit DC negative terminal and battery
negative terminal.
• Make sure the Disconnect Switch is in the OFF position. Connect a positive DC input cable
between the unit DC positive terminal and one terminal of the Disconnect Switch.
• Connect another DC input cable between the other terminals of the Disconnect Switch
to one side of the terminal of the fuse holder or DC rated circuit breaker (OFF position).
• Connect another DC input cable between the other terminal of the fuse holder or DC
rated circuit breaker to the battery positive terminal.
• Note: For Marine application, either the DC fuse or DC rated circuit breaker needs to be
installed within 7 inches (17.8cm) from the battery positive terminals.
• Install the selected fuse to the fuse holder.
Chassis DC Ground Connection:
• Connect the grounding wire to the unit's Chassis DC Ground Lug located near the DC
Input terminal and the other side of the cable to the common grounding point.
• For a Recreation Vehicle, the common ground point is usually the vehicle chassis or a
dedicated DC ground bus.
• For Marine, the common ground point is usually the DC ground bus or engine negative bus.
Note: Do not use the Chassis DC Ground Lug for your AC Grounding, For AC Grounding,
see AC Wiring instructions for more details.
AC Input and AC Output Hardwire Connections:
WARNING:
Before making any AC Input and AC Output Hardwire connection, please be sure the
AC Input Source is not energized and the DC disconnect switch is switched OFF.
Please double check the location of the AC input connector located inside the
wiring compartment. Misconnecting to the AC output connector inside the same
compartment will damage the unit and may cause fire.
Remove the AC compartment cover by unscrewing the four screws located at the front of the
AC compartment cover.
For AC Input Connections:
• Insert the AC Input cable through the AC Input Strain relief a on the unit.
• Connect the AC Main Panel AC Ground wire to the AC Input Ground terminal s on the unit.
If a solid ground wire is used, the wire can be connected directly under the screw head. If a
stranded ground wire is used, ring terminals must be used
• Connect the AC Main Panel AC Live or Hot wire to unit's AC Input 'L' Live or 'H' Hot' terminal t.
• Connect the AC Main Panel AC Neutral wire to unit's AC Input Neutral 'N' terminal u.
• Tighten the strain relief to secure the AC Input wire.
WhisperPower Inverter / Battery Charger
15
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