Transformer for motorhome in Europe

[rodrigorei]

For the ones who have knowledge on electrical stuff.
I need to buy a Transformer to run my motorhome in Europe. I know frequency is another thing, but I'll work on that.
I'll mind usage to avoid all at the same time. Added all I got inside (together) and came up with 4000w.

Looking at this one:
ROCKSTONE POWER 5000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty]

 

[binky]

We harmonised with Europe decades ago, why do you think you need a transformer?

 

[Geoff1946]

Where are you? UK no problem except possibly watching polarity of supply. USA standard supplies then yes you may need a transformer.