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 > Disconnect Power When Using Generator?

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TechWriter

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Posted: 06/28/20 06:19pm Link  |  Quote  |  Print  |  Notify Moderator

We lost power to all sites in our park today. The park let us run our generators, but said we should disconnect our RVs from the power pedestal first.

Why?


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corvettekent

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Posted: 06/28/20 06:31pm Link  |  Quote  |  Print  |  Notify Moderator

So you don't back feed power back into the parks power grid.


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pianotuna

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Posted: 06/28/20 06:34pm Link  |  Quote  |  Print  |  Notify Moderator

So that when the power returns you don't rely on the transfer switch to protect the generator in your RV.


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Dutch_12078

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Posted: 06/28/20 06:39pm Link  |  Quote  |  Print  |  Notify Moderator

The automatic transfer switch contacts can be damaged from switching power sources under load, especially larger loads like air conditioners, electric heaters, etc. There's also a remote, but very rare, possibility that a failed ATS could allow a back feed from one source to another due to welded contacts from arcing. Unplugging from shore power when running on generator power is just a reasonable safety measure. In those situations, I plug a lead light or night light into the shorepower utility outlet so I'll know when the line power is restored.


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time2roll

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Posted: 06/28/20 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

TechWriter wrote:

We lost power to all sites in our park today. The park let us run our generators, but said we should disconnect our RVs from the power pedestal first.

Why?
With all the home wiring jobs discussed on RV.net it is a big unknown if all RVs still meet code to isolate the cord.

For a properly wired and maintained RV there is no issue.


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Beverley&Ken

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Posted: 06/28/20 06:51pm Link  |  Quote  |  Print  |  Notify Moderator

"With all the home wiring jobs discussed on RV.net it is a big unknown if all RVs still meet code to isolate the cord.

For a properly wired and maintained RV there is no issue."
X2. They
Probably had an issue umpteen years ago that fed power back into the park grid.

Ken


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gbopp

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Posted: 06/28/20 07:38pm Link  |  Quote  |  Print  |  Notify Moderator

I always disconnect from shore power before I start the generator, just in case the ATS malfunctions

wa8yxm

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Posted: 06/29/20 04:57am Link  |  Quote  |  Print  |  Notify Moderator

[emoticon]hen power fails you should keep it off for 3 full minutes Normally starting the Genny will take that long.. If you are in a trailer you will manually (most likely) Transfer the plug from the park to the genny. IN a motor home like mine you have an auto transfer switch

IF you transfer "HOT" (that is turn on the Generator or turn it off) especially with the A/C running two bad thins can happen

1: The ATS (Auto Transfer Switch) contactors can weld in place and disable the thing

2: damage to the air conditioner as it tries to Re-start with a full head of pressure (Takes 2-3 mintues to blead down)


Also if the ATS fails in one type of failure you can back feed the park. That one I've never seen happen personally. but I do know how it can happen.

Finally some folks have fancy "Back feed" systems (A cord with two male plugs, also known as a "Suicide cord" in this system you have to remember to flip switches (The main breaker) to OFF before you fire it up.. Very dangerous there is a reason it's called a "Suicide cord" and you can easily backfeed the park damagign your rig, the park's electrical system. your generator and killing a lineman.. Though that sounds extreme.. it has happened.


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wnjj

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Posted: 06/29/20 09:59am Link  |  Quote  |  Print  |  Notify Moderator

The park just doesn’t want every RV in the place to switch back to campground power at the same time when it returns. If people have to manually have to reconnect it spreads the load.

2oldman

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Posted: 06/29/20 10:22am Link  |  Quote  |  Print  |  Notify Moderator

All these answers are legit, but just for kicks I'd ask the park.

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