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Old 11-22-2015, 10:34 PM   #1
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I think this is supposed to kill power to the batteries (???)

What exactly does this thing do and how do I know if it works or not? Click image for larger version

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Old 11-22-2015, 10:44 PM   #2
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Do you have a generator? It appears to be similar to one I had on a boat, it is ignition protected so sparking is contained in the switch. My guess is if you have a genny then it switches load from external to the generator. All a big guess.
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Old 11-22-2015, 11:00 PM   #3
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That's your battery cutoff switch. When you store your rig between trips, this switch allows you to shut down all 12 volt systems, thereby reserving your battery's power.

Even if you turn off all 12 volt items, there still remains a constant drain on your house batteries from various sensors, CO/Propane sensor, etc. These constant on devices will suck all your energy from the batteries in a very short time.

To use it, you turn the knob to the off position, and all power from the batteries is shut down. When you are ready for a trip, don't forget to turn the switch to the on position
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Old 11-22-2015, 11:04 PM   #4
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Quote:
Originally Posted by WayneLee View Post
That's your battery cutoff switch. When you store your rig between trips, this switch allows you to shut down all 12 volt systems, thereby reserving your battery's power.

Even if you turn off all 12 volt items, there still remains a constant drain on your house batteries from various sensors, CO/Propane sensor, etc. These constant on devices will suck all your energy from the batteries in a very short time.

To use it, you turn the knob to the off position, and all power from the batteries is shut down. When you are ready for a trip, don't forget to turn the switch to the on position

Thanks for the response Wayne.

So if I turn this switch to off, all the sensors and such no longer are pulling from the battery correct ( also no charging to the battries) , or should I install a true cut off switch ( the old knife blade kind? )
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Old 11-23-2015, 12:07 AM   #5
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That switch you are asking about, does the same action, and serves the same function, as the old knife blade switches.
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Old 11-23-2015, 10:51 AM   #6
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Some items are connected even with the switch off. In our Solera, these are items that typically don't draw electricity unless they are used - e.g., the slide out, the steps. I think the radio is connected to maintain the clock and station settings. Not sure, but suspect the "brain" for the Schwinteck slide out may be connected for the same reason - to maintain settings (I don't have a Schwinteck). Also, from posts on the forum, I believe newer models do charge the house batteries when connected to shore power even with the switch turned off.
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Old 11-23-2015, 10:15 PM   #7
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You will know it works if you turn it on, turn on some house lights then turn it off. The lights will go off. Also when you turn it off the CO/LPG detector little green light will go out. When you turn the switch on the CO/LPG detector will go back on (but will blink green while it warms up).

In 10 mins. or so you will find yourself wondering if you leave it on when traveling and the answer is yes as you need DC power for the refrig controller at least. Turn it off when you are done using the MH and store the unit.


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Old 11-23-2015, 10:37 PM   #8
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Most will not turn off the sensors. Probably some law says they can't be controlled by a switch. I don't even have a switch. I just take the battery with me and keep it on a battery tender in my garage.
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Old 11-23-2015, 10:51 PM   #9
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Some of the "extra wires" that connect to your battery positive post can be wired directly to your cutoff switch, which when turned off, will kill ALL power to the unit. No parasitics will drain your batteries: ie propane, CO, smoke detectors, antenna signal booster, stereo, etc.
The only other way to disconnect these power draws is to pull fuses at the power panel. You will be surprised just how many different devices draw power when the battery disconnect switch is turned off.
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Old 11-24-2015, 12:30 AM   #10
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If you see something that doesn't go out when you turn off the battery switch such as a sensor, then you will know it is wired directly to the battery and it will be draining your battery in whatever amount (which might be very small) even when everything else is turned off. You can remove the battery(ies) as mentioned or disconnect 1 or 2 ground cables to stop the drain. (A good way to tell if everything is off is to look inside the coach in the pitch dark for any red, green, blue or whatever other lights - but of course even that method is not perfect.)
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