Community Forums

CSWolf · 04-14-2019, 07:46 AM

Removing the main negative lead from chassis battery is not an easy task therefore to simplify want to add a disconnect switch. Any recommendations as to a specific model to use? And any advice as to special instructions regarding install, seems simple enough but I'd appreciate any comments.

gpounder · 04-14-2019, 07:59 AM

I put this in my coach on the positive lead and mounted it to the electrical wall with all the breakers. They also make a 300 amp model. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

ray999 · 04-14-2019, 08:27 AM

So would I need two of these, one for chassis and one for coach battery?

Sweetbriar · 04-14-2019, 08:46 AM

I'm a bit more partial to the marine type switch which are more enclosed and limits exposure of the tie points. Any switch will work just get the biggest amp rating needed for your configuration.

Regarding a switch for the chassis batteries if you are looking for complete and total isolation of the batteries for ALL potential loads then yes a second switch (to potentially supplement the coach builder disconnects) might be needed. Again compare amp rates against your potential demand. Chassis disconnects may need to be larger than house considering the power demand of the engine starter.

You can even go one step further with key switch that will add additional security to your setup. Might not fully stop someone bent of taking you rig but it also might slow them down enough to go somewhere else.

gpounder · 04-14-2019, 08:51 AM

I would not put a switch on the starter. Too much power and that why you have a huge starter solenoid. My coach already has the same switch for the Chassis but the starter is directly wired.

gpounder · 04-14-2019, 02:21 PM

Here are some pictures

W.J. Demo · 04-14-2019, 03:55 PM

Quote:

Originally Posted by gpounder

I would not put a switch on the starter. Too much power and that why you have a huge starter solenoid. My coach already has the same switch for the Chassis but the starter is directly wired.

A solenoid is just an electrically operated switch so, putting a manual switch in that circuit is not a problem. I would use a marine type switch and select one with an intermittent current rating at least equal to the cold cranking amps (CCA) of the battery/batteries.

oscarvan · 04-14-2019, 06:39 PM

Picking the switch is step one. Attaching terminals to existing wires is another, and more demanding skill. You will either need to remove the entire cable and take it somewhere where a proper terminal can be installed, or a terminal will need to be installed in situ. This requires some specialized tools. Google that.

Having PROPER terminals that can carry the load is critical for operational reliability and safety.