Power the network
The network requires its own 12 V DC power supply protected by a
5 amp fuse or breaker. For vessels fitted with 24 V systems, use a DC-
DC converter to supply 12 V.
Connect power at any location in the backbone for smaller systems.
For larger systems introduce power at central point in the backbone
to “balance” the voltage drop of the network.
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Note: If joining to an existing NMEA 2000 network that
already has its own power supply, do not make another
power connection elsewhere in the network, and ensure
the existing network is not powered by 24 V DC.
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Note: Do not connect the NMEA 2000 power cable to the
same terminals as the engine start batteries, autopilot
computer, bow thruster or other high current devices.
The following drawing demonstrates a typical small network. The
backbone is made up of directly interconnected T-piece joiners and
an extension cable, which is terminated at each end.
1 NMEA 2000 connection
2 Drop-cable, should not exceed 6 m (20 ft)
3 Backbone
4 Power cable
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Wiring | GO7 Installation Manual