I would like to take a US made tankless water heater to install in Italy.
The unit requires 220 volts from a 60 amp double pole breaker and # 6 gauge wire; it has a max amp draw of 54 amps. The unit's wiring harness has a stranded black, a stranded white and a solid ground wire.
The appartamento in Italy has 230 volts (50 hertz). Everything there seems wired with very thin line including a Carrier heat pump/ air conditioner. The place was built before Columbus was born. I am replacing a small electrical hot water tank; it is called a Scalda bagno and, don't laugh, it holds 10 liters. The wife here is used to a 50 gallon tank with 3/4 in lines.
I would appreciate your input.
I don't think a unit designed for sale in the states can be operated in Europe, mostly due to the voltage & hertz differences, without some kind of re-working of the unit itself. You would have to check with the manufacturer.
Any modifications of the unit, outside of what the manufacturer approves would void the UL listing, releasing them of any liability of damage, injury or lose of life. It's just not worth it.