about perfect for a 30 amp RV!
Hi, A buck/boost autotransformer? https://www.larsonelectronics.com/product/223930/1-phase-buck-boost-step-up-transformer-113v-primary-120v-secondary-31-25-amps-50-60hz Add some surge protect...
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It boosts low campground voltage so that you may safely run the roof air conditioner.
