Hughes autoformers

Yes, many RVers use a Hughes autoformer. Newest models also have surge protection.

I use both an autoformer followed by an EMS. With more and more larger units(two or three ac units) in campgrounds, voltage goes low a lot more often than people realize. I feel like I'm protected from both low and high voltage.
I couldn't make a choice of one or the other.

They don't exactly stabilize the voltage, they boost it 2% or 10% as required, that is the only two outputs. They also have surge protection.

I'm sure it does bob213 the newer units have a lot of electrical
Components now days fireplace ect. There has to be a lot of fluctuation.

bob213 wrote:
I use both an autoformer followed by an EMS. With more and more larger units(two or three ac units) in campgrounds, voltage goes low a lot more often than people realize. I feel like I'm protected from both low and high voltage.
I couldn't make a choice of one or the other.

I use the same setup. Would not be without.

Hughes now makes a ems unit as well but I will use what I have until it becomes unusable.

I use the Hughes that also has the surge protection ( RV220-50SP )... I added the hard wire hit as well so I did not have to wrestle that during set up and break down... they are NOT exactly light...

** AND ** less I have to worry about walking away

I have an Autoformer and, so far, have only used it once but it worked great. The cable clamp nut inside the cabinet that is sealed by rivets came loose. I contacted the company and they immediately sent a Fed-Ex shipping label. It's been fixed and is on its way back. I found their Customer Service excellent. And the peace of mind that I won't be starving my AC compressor with low voltage.

bob213 wrote:
I use both an autoformer followed by an EMS. With more and more larger units(two or three ac units) in campgrounds, voltage goes low a lot more often than people realize. I feel like I'm protected from both low and high voltage.
I couldn't make a choice of one or the other.

I first bought a surge suppressor but found that I needed the voltage boost so I bought an Autoformer. The Autoformer I purchased has surge suppression built into the unit. I'm just curious why you're using both the Autoformer and the EMS?

Hi,

I use an autoformer from Mexico (Sola Basic) that has three "layers" of boost (110, 100, 90) and one of buck (135). I use external surge only, not EMS. I do use an inverter charger that allows me to limit demand on the shore power side of the equation.

The Sola Basic is rated at 4000 VA so is just about a perfect fit for a 30 amp Rv service. They do make 50 amp units, too.

I use it in the winter time, too to let me get best performance from electric heating.

I have "tweeked" the boost to start at 113 volts. I have used it (previous to tweak) on a 100 volt shore power (that is unloaded voltage).

They are a commonly available item in Mexico, and considerably cheaper than the Hughes (which is a good unit).

pianotuna wrote:
Hi,

I use an autoformer from Mexico (Sola Basic) that has three "layers" of boost (110, 100, 90) and one of buck (135). I use external surge only, not EMS. I do use an inverter charger that allows me to limit demand on the shore power side of the equation.

The Sola Basic is rated at 4000 VA so is just about a perfect fit for a 30 amp Rv service. They do make 50 amp units, too.

I use it in the winter time, too to let me get best performance from electric heating.

I have "tweeked" the boost to start at 113 volts. I have used it (previous to tweak) on a 100 volt shore power (that is unloaded voltage).

They are a commonly available item in Mexico, and considerably cheaper than the Hughes (which is a good unit).

Because the Autoformer boost voltage and protects from Large surges, that's all. It does not protect like the EMS does. Using both is nessessary. There is a very big differance between Surge protector and an EMS.