Low RV park voltage is a common problem. It was not unusual for us to see pedestal voltage less than 115 during peak use. The more people using their appliances, the more park voltage drops. Many AC motors burn out due to higher than rated current draw caused by low voltage. Appliances run better on optimal voltage and amperage. We do not want our AC units or Washer/Dryer wearing out early because of low park voltage.
The voltage (V) to amp (I) and Resistance (R) relationship is:
V = IR
In order to increase voltage with constant amperage; the Autoformer increases resistance. Without the Autoformer, if the voltage drops, the amperage draw will increase to make the Watts requirement, which can cause excessive electric motor heat and trigger breakers.
The Autoformer has a sense circuit to adjust the voltage output based on the load demand. Therefore, even on a 30 amp pedestal, more appliances can be used as the voltage requirements are met.
Watts = CF (conversion factor) x I x V
Appliances are rated base on their Watts draw. A computer uses about 200 watts, TV 80 watts, AC 1500 watts, microwave 1000 watts, and coffee maker 900 watts.
The unit also has surge (4800 joules) protection. The Hughes Autoformer self adjusts up to a 10% boost. The 50 amp has 12,000 Watts capacity and it operates between 94-125 volts input.
Its heavy at 35 lbs. Size is 12” x 8.5” x 5.5”.
It can be hardwired in the RV. We leave it outside. It is water resistant, but not waterproof. We therefore place it on a brick to keep it off wet ground and cover it with a plastic bucket to protect it from rain and sprinklers.
The Hughes Autoformer has helped us with low voltage, surge protection, and when on 30 amp service.
