ELECTRICS
63
ELECTRICS
63
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
3.2 Generator Usage
Caution should be used before connecting a
generator to your caravan.
! 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. To stop the engine,
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.
MCB Rating Output Wire Colour Description
1 10 Amps White 230V Sockets
2 16 Amps White (Yellow for heater) Extra 230V Sockets / Heating System
3 10 Amps Black (Blue for Whale
water heater)
Fridge / Charger / Auxiliary devices /
Whale Water Heater
SWIFT COMMAND POWER CONTROL SYSTEM
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