Continued work today on the installation of the current shunt and fuses. The current shunt connects to the alternator output, passes through a MIDI fuse and makes it's way to the output side of the battery contactor. The second fuse also connects to the output of the Bat contactor and will feed the main buss. There are wires also for the starter and battery contactor control, the primer valve, battery buss, and shunt sense wires. With the exception of the current shunt, all my sensor wires will be on the left side of the firewall and the power wires on the right. The alternator field is the only power wire I have planned on the left side of the firewall.
I started by connecting the big 6awg wires from the alternator and the batt contactor. I used copper buss bar between the fuses and the shunt.
I made a lexan conver for the shunt to prevent accidental shorts. I got it a little too warm while heating to make the bend and got some bubbles. If I feel like it another time I may redo it. I made standoff from 6061 tube and covered them with two layers of heat shrink.
I worked out a good location to pass the wires through the firewall and got to routing all the small wires and the big 6awg to the main buss. I am using 12awg for the battery buss and will use a fuseable link to protech that wire. 12awg is probably a little overkill, but this wire will power the alternate feed to my avionics buss. the 12awg wire will meet the power need assuming everything is on and drawing the maximum current at once (which is very unlikely).
