To make it a 30 amp system is easy. It primarily consists of replacing the 15 amp cord with a 30 amp cord. Then you can plug into a 30 amp outlet.
Though we have a 30 amp cord we are often plugged into 15/20 amp circuits.
We re-populated our breaker box with 4 breakers using double 15 amp breakers. This provides plenty of circuits for the Scamp
. We have 10 separate AC outlet boxes in and outside our trailer. The magic is that all of them are not used at once and none of them are drawing full power.
That being said, we are often plugged into a 15/20 amp circuit. This is generally adequate to run our entire trailer even when camped in a cold climate.
For breakfast we typically have electric hot water, an electric heater, toaster, fridge
and 4 cup coffee pot running at the same time.
Generally I turn the heater down from it's high rating when using the toaster. We have never tripped a breaker. The reality is that the coffee pot is boiling water for minutes to make coffee, the toaster behaves similarly and even a microwave
runs for only short periods..
The heater on high will run all day with the fridge
and hot water heater (600 watts) both on electricity without tripping the main breaker or any of the Scamp's breakers.
Having four separate circuits allows major items to be on separate circuits.
All the independent breakers means consideration needs to be given to how you use them, for example the heater and toaster and microwave
(we don't have one) would all want to be using separate breakers.
Of course when you're limited to 15/20 amps, you need to be conscious of usage. For example when Ginny uses the hair dryer she shuts off the heater.
The Scamp's breaker box does not have a main breaker like your home breaker box does. In your home you may have a 100 or 200 amp main breaker feeding a number of 15/20 amp breakers, exceed 100/200 amps total and the main breaker pops, certainly a rare event.
Every RV we owned depended on the Campground's power pole for the main breaker function.