Swift Group Select 122 Owner's Handbook Manual page 77

3 System Technical Information
The following section provides further technical
information relating to the electrical system.
You can also access the supporting technical
manual from www.sargentltd.co.uk
3.1 Residual Current Device & Miniature
Circuit Breakers
The Residual Current Device (RCD) is basically
provided to protect the user from
lethal electric shock. The RCD will turn off (trip)
if the current flowing in the live
conductor does not fully return down the
neutral conductor, i.e. some current is
passing through a person down to earth or
through a faulty appliance.
To ensure the RCD is working correctly, the
test button should be operated each
time the vehicle is connected to the mains
supply (see section 2.3)
The Miniature Circuit Breakers (MCB's) operate
in a similar way to traditional fuses
and are provided to protect the wiring
installation from overload or short circuit.
If an overload occurs the MCB will switch off
the supply. If this occurs you should
investigate the cause of the fault before
switching the MCB back on.
The following table shows the rating and circuit
allocation for the three MCB's
MCB Rating
1 10 Amps
2 16 Amps
3 10 Amps
Output Wire Colour
White
White (Yellow for heater)
Black (Blue for Whale
water heater)
3.2 Generator Usage
Caution should be used before connecting a
generator to your motorhome.
!
WARNING: Never start or stop
the generator while electrical loads are
connected and switched on. Start the
engine, let it stabilise and then connect the
electrical load. When stopping the generator,
disconnect the electrical load and let engine
stabilise before switching off.
Whilst some generators use electronic inverter
technology, others use a more basic principle
to generate the 230V supply. Preference
should be to choose a generator which
produces a consistent sinusoidal wave form
with accurate voltage control.
The Reverse Polarity warning light on the
PSU may illuminate when using a Generator.
This is a normal side effect when using some
types of generator. Instead of connecting the
neutral conductor to earth, some generators
centre tap the earth connection making both
neutral and live conductors 110V above earth.
This 110V difference causes the neon polarity
indicator to illuminate.
In most cases it is safe to use a generator, but
please consult the generator handbook for
further information.
Description
230V Sockets
Extra 230V Sockets / Heating System
Fridge / Charger / Auxiliary devices /
Whale Water Heater
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