Hot Ground???
Alright, so after replacing my batteries I thought that our problems were solved. Especially when we arrived after two weeks to fully charged batteries in the storage yard(The refrigerator was hot how...
Forum Discussion
beemerphile1 wrote:
I am confused as to why you are referring to negative and ground like it is two different things. In the 12vdc system the ground is the negative and the negative is the ground, same/same.
I believe they mean negative as in the negative terminal of the battery, and ground as in the connection on the frame of the RV. With the lead between the two disconnected at the battery, the OP is seeing a higher current flowing when measuring with an ammeter between the ground connection (on the frame) and the battery than when tested between the battery end of the ground connecting wire and the battery.
I would suggest measuring the voltage between the negative battery terminal and the ground connection on the frame with everything hooked up. It should be zero volts. If not, you clearly have a high resistance in the lead between the two, which indicates the wire is damaged or there's a bad connection on either end. That should be an easy fix. I think that would be more likely to be an accurate measurement than comparing current measurements (though both should be valid from a theoretical standpoint, assuming the load of the RV isn't varying).
A ground this poor would also result in obvious problems like having lights dim considerably as more lights are turned on when running from battery power.
