Creating a junction bus
1.5h
March 18, 2026
Today I created a small copper "junction bus" to feed my engine bus from two batteries.
This is Blue Sea 5029 fuse block I intend to use for my engine bus. All connections are screw terminals, which should make this block more robust.
It only has one input, and I want to feed it through two separate supply paths (one from each battery).
To do that, I cut a small copper bus that will attach to the fuse block and provide two locations to attach diodes feeding the bus.
This is how diodes (I chose VS-175BGQ030HN4) will attach to the bus.





