USER MANUAL
EarthGuard – EG-300
Australian Energy Research Labs
AER013 – Rev 1.1
21st July 2020
10
AER013 REV 1.1
Wiring Diagram
Please refer to
Figure 1
below for the recommended wiring configuration.
Figure 1
– EarthGuard Wiring Diagram
System Under Test
5V/1A AC/DC
USB-C Adaptor
Optional External
Indication
CAUTION – Potential Hazard
If the DC+ and DC- sense wires are at risk of mechanical damage in their installed
location, appropriately rated in-line fusing is
highly recommended
due to the potential
fault currents available from the connected battery bank.
The EarthGuard is internally fused at
50mA
. As such, operational current on DC+ and
DC- will never exceed 50mA even in the event of an internal failure. External in-line
fusing is purely for protection from a short circuit occurring between the DC+/- sense
wiring as high potential fault currents (Fire Hazard) are present.
