Elctrical Circuit Issue
So today I did a stupid thing. I hooked my battery up backwards and now I have no lights working off one circuit. I blew the two fuses on the converter. Before I replaced them I had no power for fr...
Forum Discussion
westend wrote:
Look for a small can attached to the frame or inside a junction box for this battery circuit breaker. You may also have a large fuse and holder on the battery's positive wire but they were mainly used on older trailers.
Good luck on tracing it down.
Also, Happycamper, get some shut eye, sheeesh.
A reverse polarity from the battery will NOT cause the main fuse or CB (if there is one) to blow or open the circuit in the case for CB.
Keep in mind that the battery is a "floating" source of power that has no influence or being influenced by other energy source. You can reverse the polarity and at best you are only fusing the negative terminal rather than the normal fused positive.
Either way the battery will be happy.
The big impact is at the downstream end that is feed from the battery.
Most appliances and electronics are manufactured with negative ground.
With reverse polarity, pumps will run backwards, ammeter needle will move the opposite direction and electronics will not function because mother board/circuit boards use the negative chassis as return path. Transistors are made so that the trigger circuit use positive signal to function.
If you are still skeptical about this, all you have to do is look at some older tractors or construction equipment. Most of them are wired with positive ground.
