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NMEA 2000 wiring planning

Posted on Sat 31 July 2010

Maretron Micro Network Diagram I’ve mostly been working on the rigging lately, but tonight I’m thinking about the NEMA 2000 powertap installation. The Maretron powertap looks like a normal NMEA 2000 T but it has MIDMicro cord coming out of T which you wire up to the DC power system in your boat along with a 4amp fuse (See yellow powertap in the picture). Maretron has a good knowledgebase article on how to do the install but in summary you wire a couple of wires to the 4amp fuse and DC +and the rest to DC –.

I have some other DC wiring I need to clean up that is wired directly off the batteries with no fuses and I don’t want to use a bunch of inline fuses, so I’m going to use a Blue Sea Fuse Block to fuse all these individual items, but do so in a way where I have a single spot to do troubleshooting and add-on future circuits.

I’m hoping to pick up the fuse block tomorrow so I can put in the T which is the first step to getting my NMEA2000 instruments online.