Battery wiring examples – Outback Power Systems FX Series Installation Manual User Manual

Page 15

Battery Wiring Examples

• Never install extra washers between the

terminal mounting surface and the battery
cable lug—the connection must be direct and
secure.

• Always install breakers or fuses within the

positive battery cable.

• Torque 2/0, (67.4 mm

) 4/0 (107 mm

), or larger

code-approved cables rated 75°C or higher to
60-inch pounds/6.77Nm.

In renewable energy systems, batteries are connected to each other in one of three ways:

• Series (voltage increases, amperage stays the same as a single battery)

• Parallel (voltage stays the same as a single battery, amperage increases)

• Series/Parallel (both voltage and amperage increase)

Voltage remains at 12V 200AH + 200AH + 200AH + 200 AH=800 AH

12V/200 Amp Hours

12V + 12V + 12V + 12V = 48 V Amp Hours remain at 200

12V/200 Amp Hours

Two strings of batteries in series are connected in parallel. The voltage increases to 48V and the
amp hours increase to 400

SERIES

ALLEL

SERIES/P

ALLEL

Battery Cable Lug

Lock Washer

Flat Washer

Nut

Insulator

Stud