Installation — Wiring | 31
CONNECTING MULTIPLE SOLAR PANELS
When connecting more than 2 solar panels in parallel, it is important the solar connection meets the following
requirements:
If connecting multiple solar panels to the Manager ensure they are all the same, to ensure correct
operation and best performance of the system.
The solar panel ground is connected to a common ground point (i.e. common ground busbar).
A positive busbar or fuse box is used to connect all panels in an array.
Each panel is fused to protect against overcurrent faults and is appropriately sized to each panel's short
circuit current capacity. Each fuse rating must be no more than 1.5 × of the short circuit current capacity of
the panel it's protecting.
The solar cable gauge is capable of carrying the combined short circuit capacity of the solar panel array,
regardless of the maximum solar current rating of the Manager (see page47).*
*NOTE: A cable gauge not capable of carrying the combined short circuit capacity of the panels can be
used as long as it's sized greater than the maximum solar current rating of the Manager and is protected
by a suitably rated fuse.
Busbars and fuse boxes must be capable to withstand the environment conditions of their mounting
location. When selecting junctions and fuses for the solar array, ensure they are double insulated and
DCPV rated for safe operation (and to comply with AS/NZS 3001.2).
Positive
Busbar
Fuse*
Fuses
Negative
Busbar
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