Raymarine VCM100, Installation Instructions Manual

Page: 28 / 58

3.11 Circuit breaker and fuse ratings
Battery isolator switch, thermal breaker, and fuse ratings.
All power connections between the VCM100 and its power source
must be protected by a thermal circuit breaker or fuse, fitted close
to the power connection. The connection from the output of the
VCM100 to the digital radar does not require a fuse or circuit breaker.
If you do not have a thermal circuit breaker or fuse in your power
circuit (fitted to the DC distribution panel, for example), you MUST fit
an in-line breaker or fuse to the positive wire of the power cable.
The following table provides suitable ratings for battery isolator
switches, circuit breakers, and fuses.
Power
supply
Device 4 kW scanner
12 kW
scanner
Isolator switch 30 amps
(minimum rating) 30 amps
(minimum rating)
Thermal breaker 15 amps 15 amps
12 volt
Fuse 20 amps 20 amps
Isolator switch 15 amps
(minimum rating) 15 amps
(minimum rating)
Thermal breaker 8 amps 8 amps
24 volt
Fuse 10 amps 10 amps
3.12 Sharing a breaker
Where more than 1 piece of equipment shares a breaker you must
provide protection for the individual circuits. E.g. by connecting an
in-line fuse for each power circuit.
D1
1637-1
+VE bar
Circuit breaker
Fuse Fuse
-VE bar
Where possible, connect individual items of
equipment to individual circuit breakers.
Where this not possible, use individual in-line
fuses to provide the necessary protection.
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HD and SuperHD Digital Open Array Installation instructions