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Old 09-16-2015, 07:31 PM   #1
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Batteries drawing after disconnect switched off

I was installing my Xantrex battery monitor system on my Forester's 2 group 27 batteries. I had the kill switch engaged. When the Battery monitoring system was installed, it showed .1 amp draw. When it was in my Winnebago, it showed 0 zero with the battery disconnect switched. Should be zero in the new Forester. That means when batteries are disconnected between trips, the draw will be 19 amps per week. Good thing I keep it in my driveway instead of a storage lot as it would be totally dead in 3 months. The monitor itself draws 18mA in power saving and 32mA normal monitoring, so I don't thing it's that.
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Old 09-16-2015, 07:40 PM   #2
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not sure how you are coming up with a "amps per week" figure. Any amp draw at all will drain battery over time of course. Why not just put in a mechanical disconnect switch instead of one that uses power to save your battery
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Old 09-16-2015, 08:36 PM   #3
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Lots of little draws that the factory switch doesn't deal with.
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Old 09-16-2015, 09:09 PM   #4
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At .1 amp per hour x 24= 2.4 ah per day times 7 =19 ah per week x 4 weeks = 76 ah in 4 weeks. Not place in the under the step battery compartment for a knife switch.
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Old 09-16-2015, 09:24 PM   #5
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These are common in automotive.
Easy to install and should fit.


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Old 09-17-2015, 12:05 AM   #6
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This is what I use for the main battery disconnect. It connects inline on the battery cable.

12V CAR Stereo Audio Current Circuit Breaker Inline Fuse Protector 100Amp 100A | eBay
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Old 09-17-2015, 07:04 AM   #7
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A circuit breaker is not meant to be manually tripped on a regular basis.

Not sure how often you trip it..


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Old 09-17-2015, 07:49 AM   #8
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A circuit breaker is not meant to be manually tripped on a regular basis.

Not sure how often you trip it..


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That's funny because that is the way we all use them at the power pedestal in campgrounds.
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Old 09-17-2015, 08:54 AM   #9
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That's funny because that is the way we all use them at the power pedestal in campgrounds.

You trip the breaker, plug in, then turn it back on?
Why..


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Old 09-17-2015, 09:03 AM   #10
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Circuit breakers are marked SWD if they are designed to be used as a switch.

SWD - switch duty. Usually used for fluorescent lighting.


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Old 09-17-2015, 09:23 AM   #11
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Circuit breakers are marked SWD if they are designed to be used as a switch.

SWD - switch duty. Usually used for fluorescent lighting.


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I can attest to that. Been using the breakers in my shop for the lights the past 25yrs and haven't changed one out yet.
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Old 09-17-2015, 12:19 PM   #12
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You trip the breaker, plug in, then turn it back on?
Why..


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To keep from arching when plugg'n in.
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Old 09-17-2015, 12:26 PM   #13
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To keep from arching when plugg'n in.
X2
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Old 09-17-2015, 12:36 PM   #14
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Arcing? Yes, it happens

Depending on how much load the RV presents to the pedestal you are now using the male plug as a switch, hope you can get all contacts engaged at the same time and quickly.

In the past I did not turn the pedestal breaker off, just plugged in with AC and sometimes water heater ready to run. I could hear the arc as the plug male blades made contact. Since I worked professionally as an electrical engineer I knew right away this wasn't a good situation so now I turn off the breaker, insert my plug and energize the breaker and let the pedestal breaker handle the startup load of the coach.

Yep, there are many of you who have never de-energized the circuit breaker and plugged your RV in for a lot of years and never had a problem, me too! But why invite trouble? it's easier on your electrics/electronics if you allow the circuit breaker to energize your RV. Unless the breaker is defective (and it does happen) chances are extremely good that all connections will made nearly simultaneously.
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Old 09-17-2015, 01:08 PM   #15
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Depending on how much load the RV presents to the pedestal you are now using the male plug as a switch, hope you can get all contacts engaged at the same time and quickly.

In the past I did not turn the pedestal breaker off, just plugged in with AC and sometimes water heater ready to run. I could hear the arc as the plug male blades made contact. Since I worked professionally as an electrical engineer I knew right away this wasn't a good situation so now I turn off the breaker, insert my plug and energize the breaker and let the pedestal breaker handle the startup load of the coach.

Yep, there are many of you who have never de-energized the circuit breaker and plugged your RV in for a lot of years and never had a problem, me too! But why invite trouble? it's easier on your electrics/electronics if you allow the circuit breaker to energize your RV. Unless the breaker is defective (and it does happen) chances are extremely good that all connections will made nearly simultaneously.
This is all correct and I did this too. Now that I have installed a Progressive power management system I don't need to, the progressive does it for me. It waits 10 seconds or so to apply power to the trailer after the plug is put in. No arcs.
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Old 09-17-2015, 01:10 PM   #16
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Put a manual disconnect switch inline on battery cable and be done with it.
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Old 09-17-2015, 01:18 PM   #17
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This is all correct and I did this too. Now that I have installed a Progressive power management system I don't need to, the progressive does it for me. It waits 10 seconds or so to apply power to the trailer after the plug is put in. No arcs.
I have the same, but you can get arcing when un-plugging as well.
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Old 09-17-2015, 02:31 PM   #18
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At .1 amp per hour x 24= 2.4 ah per day times 7 =19 ah per week x 4 weeks = 76 ah in 4 weeks. Not place in the under the step battery compartment for a knife switch.
Use What is shown in that picture. Or just pull the cable off when you know you're not going to be using it for a while. Or there's a good old standby invest $40 in a battery tender. Or throw 200 watts of solar on your roof with a good charge controller and never think about it again. The latter was my choice.
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Old 09-17-2015, 02:33 PM   #19
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I plug in without anything on.
Wouldn't that make more sense?


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Old 09-17-2015, 02:40 PM   #20
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You trip the breaker, plug in, then turn it back on?
Why..


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Let the breaker absorb the arc. It will be smaller, quicker, and not scar my plug, I also hope it is minimizing the surge affect on Coach electronics.

Maybe not but thats how I see it and that's the way we've been doing it on the few occasions that we are on hook ups.
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