How to run both AC's on a 30 amp site with a 50amp RV

[Lantley]

The below is a slightly edited repost that I made in July on the Open Range Forum.
This post was made after I had tested the RVsafepower transfer switch during a trip to Myrtle Beach.

I installed the RV safepower Transfer switch of few months ago. This switch was designed and created by a Open Range forum member.
When the inventor first posted of his contraption I initially dismissed the entire idea.
I eventually followed his post and realized if his device worked it would be a real game changer.
I am to report from MB state park where it is 95º hot and humid that the device works as designed. I was able to fire up both A/C's and run them continuously without issue.
One of the unexpected outcomes I experienced after buying my 50 amp 399 BHS in 2012 was that I found myself chasing 50 amp sites.
I did not like using the energy management techniques required to stay on 30 amp sites. Furthermore I could not run both A/C's on a 30 amp site which is a total deal breaker in the summer months in the mid Atlantic.
By chasing 50 amp sites I had really changed my destinations.
Seldom did I book state parks. I was forced to always go private over public due to the need for 50 amps. Lots of familiar regular places were eliminated from my itinerary.
Several great state parks were replaced by places with 50 amp sites.
Well that has officially changed. The RV safe power transfer switch allows me to plug into the 30 amp outlet as normal and then plug in a 2nd dedicated auxiliary cord into the 20 amp outlet to power my 2nd A/C. The system was flawless in the intense Myrtle Beach heat.
For anyone interested in running both A/C's on a 30 amp site or desiring to stay in older parks with only 30 amp sites the RV safepower switch is a game changer.
The switch is specifically designed to work on GFI outlets without tripping the reset. It is a transfer switch not an adapter.
It is wired into your breaker box and allows you to feed the AC or selected appliance from the traditional panel or from the CG pedestal.
Once installed it is a true game changer.


For the most part I am booked at 50 amp sites the remainder of this season.
However next year 30 and 50 amp sites will be on the schedule.

For the record I have no affiliation. I am just trying to spread the word on a fantastic product/idea. This transfer switch is a real game changer

Link to product

[time2roll]

$350? And you have to fiddle with it?

Same thing $60 20 amp transfer switch (automatic)

Add a 5-15 or 5-20 inlet from Amazon if desired and you are good to go.

[joebedford]

I run both my a/c's on 30A. Don't have an EMS.

[MrWizard]

no offense to the OP
but you ARE using 50amps of 120vac not just 30amps

you are able to use a 30amp SITE, because you also use the 20amp outlet

if there was NO duplex outlet, you would be limited to 30amp only , and only (1) a/c

[Acampingwewillg]

Have a '96 MH(so that you know it doesn't have the latest electronic gadgets) two 15,000 BTU Carrier airs and I have a Thousand Trails membership. Alas, you ask why am I saying all this....Thousand Trails is old school Pedestal's and mostly 30 amp aluminum wiring...I often run both AC's and my Residential fridge on their 30 amp power. Go figure!

[pianotuna]

It is not much more than a manual transfer switch.

I do something quite similar with male and female plugs.

For example tonight it will be -3 c (26.6 f), so I'm running on two 15 amp circuits. That will allow me to run enough electric heat to stay nice and warm without blowing shore power breakers.

RV is at 22 c (71.6 f).

[Big_Katuna]

I have an Intellitec EMS and I run two ACs routinely. It manages sequencing the fans and compressors.

Many have rewired the 2nd ac to plug it into the pedestal or the RV 50 A panel.

[janstey58]

I have run both my ACs on 30A just fine. I do have EMS, but it doesn't do anything unless I go over 30A draw for the whole MH. My two ACs running hard only pull 20 or so amps.