Ensure, if you are choosing to wall mount, that your mounting points are secure and sufficient to hold the weight
with the mounts you choose to use. Ensure that there is space for ventilation (minimum 10cm) to allow air
circulation. Ensure at least 2 of the available mounting supports are screwed in for install.
These units are neutral earth bonded, tying the neutral to the earth terminal. This gives 230V across the live and
neutral terminals but also from live to earth. This allows an RCD to operate safely as intended and is compliant
with hard wire installation requirements on vehicle installs.
All electrical installations should be carried out by a professional electrician. High voltages are a reality when
utilising an inverter and do have the potential to kill you. Ensure your input and output voltage needs are correct
for the model you have before continuing.
Sterling do not provide, by default, the cable necessary for your installation. We are of the belief that every install
is unique to the client and as such we cannot presume. Ensure that your cable thickness is sufficient and safe for
the current we can expect to move through it and ensure that you fuse your cable when connecting to a battery.
Red cable refers to the cable on the positive DC line. Black cable refers to the cable on the negative DC line.
1. Ensure all instructions have been adequately understood and you have ensured your personal safety.
2. Connect one side of the red cable to the positive DC terminals at the back of the inverter and one side of the
black cable to the negative DC terminals at the back of the inverter.
3. Tighten all connections firmly
4. Connect the remaining ends of cable to the battery. The red positive cable connects to the positive terminal on
the battery. The black negative cable connects to the negative terminal on the battery. These cables should be
correctly fused and the connection itself must be firm, tight and sufficient.
Do NOT reverse polarity the inverter (Positive to negative, negative to positive). This can destroy the inverter
and would not be covered under warranty.
The AC output ground must be connected with the grounding point for the connected equipment. The ground
connection on the inverter itself should be connected to the ground chassis on the vehicle with 6mm2 cable.
All Sterling PS inverters have two plug sockets. One Schuko (Euro) plug and one UK mains plug. Ensure that
your AC equipment does not exceed the power rating of the inverter. The inverter is at risk of becoming damaged
in the instance of power surges. This damage is not covered within the warranty as it constitutes invalid use.
Some users may wish to run this inverter in conjunction with other AC power supplies such as a mains supply or
a generator. This is NOT suitable. Having the inverter involved with other AC power supplies in a circuit will
damage the inverter and this is not covered by warranty. You must utilise a cross-over switch for use in these
situations.
An inverter MUST be safe for use. It may sometimes be difficult to obtain a good grounding/earth connection
however this is important to it’s safe operation. In some circumstances it is obligatory by law to have these units
safely grounded. To determine cable size / fuse size, refer to page 11.
PRODUCT INFORMATION
Mounting
Neutral Earth Bonding
Install Preface
Installation Instructions
Grounding
AC Equipment
Other AC Power Supplies
Legal Obligations
INSTALLATION
PRODUCT INFORMATION 08
Sterling Power Products
Copyright
1) UK socket
2) Euro socket
3) Power LED Green, on when inverter is Live.
4) Fault LED Red, if on there is a fault.
5) LED display
P = Power (W).
U = Voltage ( input DC ) = +/- 0.2V
6) Remote control (optional)
7) USB charger
8) On / off ( remote control )
9) Positive cable or positive connector in larger units
10) Negative cable or negative connector in larger units
11) Earth to chassis
12) Residual Current Breaker (earth trip)
13) AC output Live Earth Neutral connector, under flap.
Live
Neutral
Earth 230V
0V
230V
Netural Earth Bonded
Battery
+_
Battery
+_
Hard
wired
AC output
Ring Main
Earth
Installation
All electrical installations should be carried out by a professional electrician, any
doubts about installing this should be addressed to us as soon as possible. Do
not install this unit if you are not competent to do so, high voltages are involved
and have the potential to kill you. Ensure the inverter has the correct voltage
(DC and AC) and the correct power (W) for you vehicle / boat before installing.
Installation for twin socket:
1) Fit in a cool dry well ventilated space as close to the battery bank as possible.
2) Ensure at least 2 of the 5 mounting supports are screwed to the bulkhead.
3) Ensure both AC and DC cable is large enough to deal with high currents
4) Install DC cable fuse into each installation. Fuse size per unit in specification.
6) Secure the unit in position, fit DC fuse and isolation switch (not essential) as
required.
7) Do not reverse the DC cables. Connect the red cable to the positive
terminal and the black cable to the negative terminal of the battery, reverse
polarity could destroy the unit and would not be covered under warranty.
8) The standard sockets are rated at 13A. So you should NOT attempt to pull
more than 3000W through the sockets (irrespective of which SIB model you
have). If you require more power from your 4000W or 5000W model use
Hard wired installation
Underneath the plastic flap on the AC side (13) exposes the Live Earth and
Neutral connectors for hard wiring. Fasten the appropriate 3 cables to this
connector. Ensure the AC cable thickness is appropriate for the use.
Recommended cable sizes are on the next page. Hard wiring is appropriate to
maximise the potential of the 4000W and 5000W models, as we
recommend against pulling 3000W-5000W through the UK / Schuko
sockets.
In the event of this unit being installed into a ring main or extension power
circuit. The output voltage of this unit must never be on your AC system at
the same time as the 230V external mains line. If the output voltage is to be
used on a ring mains system, a suitable two-pole crossover switch must be
used. Failure to do this shall result in the destruction of this unit even if switched
off - this shall not be covered under warranty.
Sterling GANL Fuse holder
with correct GANL Fuse
( see specification )
Sterling
Isolation switch
(not essential)
Sterling
Isolation switch
(not essential)
Sterling GANL Fuse holder
with correct GANL Fuse
(Page 11 for cable and fuses)
earth to vehicle
chassis or boat
bonding system
earth to vehicle
chassis or boat
bonding system
Optional
remote control
with 10 meter
cable
(Part No SWR)
Wired AC
8888 6
12
34
87
5
910
11
13
AC side DC side
230V AC
(up to 5000W)
AC out
cover plate
Live
Earth
Netural
STERLING
POWER
1.31 v
850W
1.31 v
0
I
1.31 v
0
I
AC Sockets
to AC
distribution
(RCD model)
