Forum Discussion
ken_white
Sep 14, 2014Explorer
smkettner wrote:
If the shunt is first the monitor remains powered up afaik. So battery is not fully off.
I tend to put the cut-off switch (fully insulated) on the positive as that is the convention of the system. All other switches and fuses are on the positive side. Non-insulated knife switch etc. I would put on the negative as it leaves a lot of metal exposed for a short. Electrically it is the same effect.
If the battery is disconnected, no current can flow through the shunt.
If the negative is disconnected first, then the battery cannot be shorted out should a wrench on the positive terminal inadvertently contact a grounded part of the camper.
EDIT: I made some assumptions so both of the above comments depend on whether the chassis ground is connected back through the battery disconnect switch to the battery negative.
The battery negative terminal cannot be directly grounded to the chassis with the switch just opening the negative connection between the battery and converter or it will never be unloaded.
The chassis ground connection should be made at the power converter or branch between the power converter and disconnect.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,330 PostsLatest Activity: Oct 30, 2025