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Open Roads Forum  >  Class A Motorhomes

 > Transfer switch

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Joeycockerspaniel

Cumming, GA

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Posted: 05/22/12 06:31am Link  |  Print  |  Notify Moderator

Just this past weekend, I switched from shore to Gen under load. Began a problem with energy management system that I traced back to the genset, which has two 35 amp breakers. It flipped one of the breakers. Thankfully that is all it was. I was hoping I had not fried something. Won't do it again, even though it is supposedly OK to do so.


Hank & Winde
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Posted: 05/22/12 03:55pm Link  |  Print  |  Notify Moderator

we don't have a Damon .but we found ours when it caught on fire last fall. now we don't have one .


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garry1p

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Posted: 05/22/12 07:30pm Link  |  Print  |  Notify Moderator

I suspect the main failure of transfer switch is "operator error" never switch when under a load or shut off generator when under a load. Even though the contacts are "break before make" they will still arch over damaging the points until they eventually melt and solder themselves together.

As for location most likely place would be close to the power panel but can't say for sure in your rig.


Garry1p


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wolfe10

Texas

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Posted: 05/22/12 08:05pm Link  |  Print  |  Notify Moderator

Two things are hard on ATS's.

Yes, transferring under load.

The other is inadequately tightened connections leading to resistance, which produces heat which increases resistance..............


Brett Wolfe
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UltraKen

Ohio

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Posted: 05/23/12 07:19am Link  |  Print  |  Notify Moderator

Did I suggest switching from Shore Power to Genset while under LOAD?
Or vice versa?




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wilpower

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Posted: 05/23/12 10:06am Link  |  Print  |  Notify Moderator

UltraKen wrote:

Did I suggest switching from Shore Power to Genset while under LOAD?
Or vice versa?




Unless you turn OFF the main breaker in the coach, there is always a load. Charger, fridge, anything plugged into an outlet etc.


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ShapeShifter

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Posted: 05/24/12 11:07am Link  |  Print  |  Notify Moderator

roachcoach wrote:

I finally located the transfer switch

So, don't keep us in suspense... where is it on your rig? (This may also help the next person to come along with the same problem.)


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roachcoach

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Posted: 05/24/12 10:26am Link  |  Print  |  Notify Moderator

I finally located the transfer switch which is ITS-50R and found out they are no longer being made. In talking to energy bay they have a Power Max 50 amp Transfer switch which is idenical to the ITS-50R. Has anyone had any experience with this transfer switch?


Richard & Rachel
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Jim@HiTek

Gresham, OR, USA

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Posted: 05/24/12 11:33am Link  |  Print  |  Notify Moderator

Seems as though that device was recalled. http://www.keystonerv.org/forums/showthread.php?t=5008


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MrWizard

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Posted: 05/24/12 12:39pm Link  |  Print  |  Notify Moderator

I follow the never switch "while with a load"
its easy for me I seldom have shore power, but when I do its easy to unplug and then start the generator

so what if i have to turn the A/C off, and then to fan for a few minutes, the power situation will be a lot more troublesome if i where to have problems with the ATS, preventing problems is better than fixing them


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