Operating instructions

7-14
CONNECTION OF SERVICES
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
page 7-20).
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 10 Amps
36 Amps
Fuses
WARNING
When replacing fuses always replace a
fuse with the correct value. NEVER
replace with a higher value/rating as this
could damage the wiring harness. If a
replacement fuse ‘blows’ do not keep
replacing the fuse as you could damage
the wiring harness. Please investigate the
fault and contact your dealer.
The following table shows the fuse allocation
for the 12 fuses fitted to the EC155 PSU.
FUSE/MCB TABLE
Fuse Rating
1 15 Amps
2 10 Amps
35 Amps
4 10 Amps
5 10 Amps
6 10 Amps
7 10 Amps
85 Amps
9 20 Amps
10 20 Amps
11 10 Amps
12 15 Amps
Battery 20 Amps