Cut-Off Switch; Possitive or Negative?

System

This discussion was created from comments split from: Closing the Opening Behind the Metal Tub on the Outback.

Bert

Michigan Mike--Do you know whether the factory puts the cut-off switch on the positive lead to the battery or on the negative lead?

Michigan_Mike

Bert said:

Michigan Mike--Do you know whether the factory puts the cut-off switch on the positive lead to the battery or on the negative lead?

I'm not certain and as noted before this is a well debated and discussed topic.  I would probably use the ground wire for safety reasons, but it would be fine to use either side IMHO if you are familiar with electrical systems and performing this type of work.  Electrically it does the same thing (isolates the battery) and I've done it both ways and without any issues.  I will ask when I get a chance and see what they say down in Sugarcreek.  

Sharon_is_SAM

Our 2017 came with the cut off switch on the positive.  

Bert

I've been told that dealers use the positive wire on the cutoff switch. Don't know the pros and cons, but am considering doing it the way dealers do it so it will cause less confusion if it ends up at a dealer.

Michigan_Mike

Bert said:

I've been told that dealers use the positive wire on the cutoff switch. Don't know the pros and cons, but am considering doing it the way dealers do it so it will cause less confusion if it ends up at a dealer.

From the factory this AM:

Hi Mike,

 Great question, we wire the cutoff switch on all the model units & all year units the same. It is disrupting the hot side, positive wire that goes to the junction box isolating it form everything. So when it is in the off position it will not let any voltage be added or given to the battery.

 

Photomom

I interpret that to mean the switch must be ON when we plug the trailer into 120v if we want the battery charged, yes?

Sharon_is_SAM

Yes

Bert

Thanks, Michigan Mike. That answers the question for me. I'm cutting the red one!

Tabbieannecamper

We have a 2015 T@B Max S. I would like to install a battery cut off switch on our camper. This is for Michigan Mike and others who have installed them. Does nucamp sell them or another source? Thanks!

Gary Pasch

Rockford, IL

Verna

If you do a search here on the forum, as I recall, Michigan_Mike found a red battery cutoff switch that was a very heavy duty one. I installed one from Amazon, as shown in the attached photo.  Be sure to get a cable that is recommended with the Amazon battery cut off switch. 

ScottG

This one by Blue Sea Systems is also popular and available from Amazon. It can be surface or flush mounted: