4. Installation
This product may only be installed by a qualified electrical engineer.
4.1. Mounting
4.2. DC connection
In order to utilise the full capacity of the product, batteries with sufficient capacity and battery cables with sufficient cross-section
should be used. The DC cables must be copper and rated 90ºC. See table.
48/3000/35 48/500/70
Recommended battery capacity (Ah) 100-400 200-800
Recommended DC fuse 125 A 200 A
Recommended cross section (AWG) per + and - connection terminal *, **
0 – 5 m 35 mm² 70 mm²
5 – 10 m 70 mm² 120 mm²
* Follow local installation rules.
** Do not locate battery cables in a closed conduit.
Remark: Internal resistance is an important factor when working with low-capacity batteries. Please consult your supplier or the
relevant sections of our book ‘Energy Unlimited’, downloadable from our website.
Connection Procedure
Proceed as follows to connect the battery cables:
Use a torque wrench with an insulated box spanner in order to avoid shorting the battery.
Recommended torque: 12 Nm (M8 nut)
Avoid shorting the battery cables.
• Undo the two screws at the bottom of the enclosure and remove the service panel
• Connect the battery cables, see Appendix A for a connection overview.
MultiPlus-II inverter/charger off-grid Australia
Page 8 Installation
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