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Old 09-28-2015, 07:57 PM   #1
WDW
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Automatic transfer switch

So I was looking at an A / Coachmen and the rep pointed out that it did not have an automatic transfer switch. Just plug it in when un plugging from shore power.

Makes sense. So why the need for such a device?


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2015 JAYCO 31FK

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Old 09-28-2015, 08:02 PM   #2
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Quote:
Originally Posted by WDW View Post
So I was looking at an A / Coachmen and the rep pointed out that it did not have an automatic transfer switch. Just plug it in when un plugging from shore power.

Makes sense. So why the need for such a device?


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Sort of like power windows...........just another way to accomplish a pretty easy task and make it more complicated.
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Old 09-28-2015, 08:04 PM   #3
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Automatic transfer switch

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Originally Posted by WDW View Post
So I was looking at an A / Coachmen and the rep pointed out that it did not have an automatic transfer switch. Just plug it in when un plugging from shore power.

Makes sense. So why the need for such a device?

Convenience. It's storming outside and dark....now the power goes out. With an automatic transfer switch, just press the generator start button, and Voila! You can keep cooking your dinner, and keep cool with the AC.....without it you would have to go unplug the shore cord from the outlet and plug it into a receptacle in the basement near the generator....getting wet in the process!

This also allows the use of AGS (auto generator start) which can start the generator automatically in the case of a power failure or the thermostat calling for AC and there is no shore power available.
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Old 09-29-2015, 01:09 PM   #4
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I am surprised any manufacturer would leave a transfer switch off for numerous reasons, but not surprised it is Coachmen.
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Old 09-30-2015, 08:16 AM   #5
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Why have an automatic transfer switch.

I pulled into the nice new campground (Well the part I was in was new) and plugged into the nice solid 50 amp outlet.. Very good power.... Then teh clouds rolled in the lightening flashed, the thunder rolled the rain came down in great quantity and shore power... Went away... Without getting my feet wet I went up to the front of the RV. and pressed a button or two (One button top and bottom, bottom first) and ... Chugga, Chugga Varoom... 30 seconds later the lights brightened and everything worked again.

Folks with the go outside and plug in systems... Got very very wet.e

There is a 2nd reason as well....

The generator outlet is often in the Power bay where you store the cord coiled.. I have done a test on a coied cord (12ga on a 15 amp outlet drawing aroudn 4-7 amps) coiled and stretched out.. The coiled part got very warm.. Due to the low current it did not get dangerously warm but If I'd have been pulling more amps it would have become a hazard. When you plug in you usually have the cord coiled in the bay.. While I've never heard of a fire because of that... It still concerns me. That said, the coil made by a 30 or 50 amp cord is much larger in diamater, and fewer in turns than the 12ga coil I tested with,,,, Thus it is much safer.. But .. Well.. I really am diagnosed as paranoid (And at one time paid to be just that as well) so I tend to worry about this kind of thing.
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Old 10-05-2015, 12:34 PM   #6
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An automatic transfer switch costs money, and some manufacturers cut every cost that they think they can get away with.

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I am surprised any manufacturer would leave a transfer switch off for numerous reasons, but not surprised it is Coachmen.
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