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...
Forum Discussion
pianotuna wrote:
Hi,
Except that every hybrid inverter/charger (those with load assist) has an autoformer inside.DrewE wrote:
This makes good sense; if an autotransformer were used in a converter, you'd end up with a neutral/ground fault by design in the RV, and also significantly increase the risk of a hot skin condition. on the RV.
Are you sure about that? The manual for the Magnum hybrid inverter/charger states that "The AC output neutral conductor and the DC negative conductors are not connected (bonded) to the inverter chassis. Both the input and output conductors are isolated from the enclosure and each other." If there is an autotransformer in the circuit, it is not bridging the AC and the DC sides (i.e. there's some other means of providing isolation). I would guess it's instead a normal transformer with separate windings, but I really don't know anything of the details of their circuit topology.
It's entirely possible to make a voltage boosting transformer that is not an autotransformer; it just typically requires more copper or whatever metal is used for the windings and generally a larger core and so is bigger, heavier, and more expensive.
