The system electrical negative should be bonded through a GFPD to earth ground at one (and only one) location.
When a ground fault is indicated, battery terminals and connected circuits may be un-grounded and
hazardous.
4.5. Electrical connections
Make all electrical connections in the following order:
• Confirm correct battery polarity, then connect the battery (this will allow the solar charger to recognize the system voltage).
Torque moment 1.6Nm.
• Connect the VE.Direct communication cable (if applicable).
• Confirm correct PV polarity, then connect the solar array.
Torque moment 1.6Nm
If accidentally connected in reverse polarity, the PV voltage will drop and the controller will heat up but will not charge the
battery.
• In case a MPPT WireBox is used:
First: Secure all electrical cables as indicated in the WireBox installation instructions
Then: Place the WireBox plastic cover over the solar charger connection area and secure it.
See below figure for an example of the solar charger connections:
DC loads
4.6. Connect the MPPT Control display
Connect the (optional) MPPT Control display to the VE.Direct port of the solar charger using a VE.Direct cable.
Note that it is not possible to extend the VE.Direct cable, the maximum length can not exceed 10 meter.
For more information, see the
MPPT solar charger manual
Page 11
Installation