Quote:
Originally Posted by Bob Denman
If you already have a "surge protector" hard-wired into your electrical system: how would you add the AutoFormer? (Assuming that you could...)
I like the idea of a plug-in voltage meter; but I'm not sure if I have a spare outlet anywhere in the RV.  |
The Hughes auto transformer is made to plug in directly to the pedestal. It comes with a security cable. Most used an extension cable and permanently mount it in a basement compartment and hard wire it to the transfer switch.
Watts is equal to amps times volts. The cut-over point for the extra coils in the transformer is 113 volts. Less say your A/C is drawing 1500 watts @ 120 volts (12.5 amps) and the campground voltage drops to 110 volts so the A/C needs 13.6 amps to keep running. Heat in the motor varies logarithmically with amperage. The transformer kicks in and the voltage to the coach increases by 10 volts back to 120 volts and the A/C now draws 12.5 amps but primary stage of the auto-transformer is still drawing 13.6 amps @ 110 volts from the pedestal.
Thor Forums
