Battery cut off switch
I want to put a battery cut off switch on my TT so I do not have to keep removing the cables when I store. The question, should I put on one or should on two to cut off both sides of the battery?
Forum Discussion
28 Replies
- The disconnect will achieve the desired function on the positive or negative BUT:
On a trailer the disconnect should be on the positive side and the breakaway switch should be wired directly to the battery prior to the switch. That way the breakaway is capable of operation regardless of the position of the switch. Safety first and foolproof. tenbear wrote:
F105 wrote:
Keep in mind that some RV's will draw a small amount of voltage from the battery even with the disconnect switch in the disconnect position.
If the battery disconnect switch is installed on the battery there will be no current drain on the battery. The battery will still self discharge very slowly.
Some RVs, mine included, have the battery disconnect near the converter and it does leave some parasitic loads connected which do draw a small current.
That's what I was trying to say,,but you said it better.
The point being is even with a battery disconnect switch installed,some RV's are wired in such a way that there will be a small current drain.F105 wrote:
Keep in mind that some RV's will draw a small amount of voltage from the battery even with the disconnect switch in the disconnect position.
If the battery disconnect switch is installed on the battery there will be no current drain on the battery. The battery will still self discharge very slowly.
Some RVs, mine included, have the battery disconnect near the converter and it does leave some parasitic loads connected which do draw a small current.T-10 Parabolic wrote:
Captain_Happy wrote:
Mine is connected on the positive side. Either way will work.
Question-- If you put the switch on the positive pole when you put the switch in the disconnect position does it not spark??? Also when put the switch in the connect position will it not spark??? T-10
No it won't - remember the advantage of a battery disconnect switch is both convenience and you don't have to remove any cables to isolate the battery. The sparks would occur during the removal or reconnecting of the battery cable if done incorrectly.
The disconnect switch elimates the need to remove a battery cable.
Just think of the disconnect switch as a way to remove the battery without actually removing it.
Keep in mind that some RV's will draw a small amount of voltage from the battery even with the disconnect switch in the disconnect position.- Lots of styles out there. The simplest is the post type that goes on one of the batteries.
tenbear wrote:
And thats the reason why...ten bear has it right...
It is safer to put it in the negative lead. If you are working with the positive lead and your wrench touches any ground it will short the 12v to ground and cause a BIG spark and possibly damage. If working on the negative lead, what you are working on is already at ground, no problem.
If you really want it on the positive lead, disconnect the negative lead first.
There is no difference in functionality, positive or negative lead.todouble wrote:
dealer told me it goes on the negative side. hope this helps
X 2 always neg. side- It is safer to put it in the negative lead. If you are working with the positive lead and your wrench touches any ground it will short the 12v to ground and cause a BIG spark and possibly damage. If working on the negative lead, what you are working on is already at ground, no problem.
If you really want it on the positive lead, disconnect the negative lead first.
There is no difference in functionality, positive or negative lead. - Instructions I've read said to install on negative terminal.
- I added one on the Positive side, being I we have a 5er it is located in the front compartment in an easy to reach spot. One of the improvements I ever made.
