Solar

DC Distribution

daniel

This post will discuss the changes made to the DC side of the RV. The main change is a switch from the lead acid batteries on the tongue of the RV to the new LiFePO4 batteries inside the RV. A 6/2 SOOW cord carries power from the Lynx distributor to the existing distribution panel. Two issues needed to be addressed because of this change.

  • The tongue jack which requires power and has a 30 amp fuse. It is now far from the batteries which will require good size wire.
  • The second is the breakaway/emergency brakes. This connection should be directly to the battery with no fuses.

Solving the first issue with the tongue jack I was able to use the 6awg wire that originally was used to send the power from the lead acid batteries to the distribution center. In a stroke of luck the distribution panel had a open 30 amp rated circuit I was able to move the original 6awg wire to.

The breakaway issue is a area of debate online. Some folks will tie it into their lithium battery bank. I don’t like that idea. Read more info in this post.

The original two group 24 lead acid batteries have been removed
6awg wire that was the “input” has been swapped to a 30a output circuit. Its the bottom most circuit. The new incoming DC power passes through a 50a breaker/switch for easy disconnect. I also added a 15a breaker/switch for the fridge to make it easy to turn it off when not in use.