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Jabiru Aircraft
Pty Ltd
Installation Manual
Jabiru 3300 Aircraft Engine
REVISION
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Dec 2016
Page: 17 of 56
Figure 14. Starter Wiring Details
4.6
Battery
The battery should be of a light weight, 12V, 20 Ah type able to accept a charging voltage up to 14 V (+
0.8V) and a 30 AMP Input.
For optimum starting the battery used must have a high Cranking Amp Capacity (also known as Pulse Amp
Capacity). The standard battery used by Jabiru Aircraft has a Pulse Amp rating of 625 Amps. Batteries with
higher Pulse Amp ratings may be used and will improve engine starting in colder climates.
4.7
Wiring Practices
Using aircraft grade wiring is strongly recommended. Compared to other grades of wire aircraft grade can
carry higher currents for the same physical size and weight. The insulation used on aircraft grade wire is
also frame resistant and is designed for better resistance to damage caused by chaffing or rubbing.
Care should be taken to identify each wire via labels or similar. This makes troubleshooting electrical issues
much easier.
Wherever possi
ble wires should be identified as carrying “Power” or “Earth”. This can be done by using
different colour connectors or applying rings of coloured heat-shrink during assembly. Again, this step
simplifies troubleshooting or later modification.
Wires should be laid out in bundles and supported along their length to prevent failures due to fatigue.