You only need 20 Amp circuit
You only need 20 Amp circuit for Rav4 3.3KW charger at 240 volts. Though most of home level 2 charger with plug comes with NEMA 14-50P so you will have install NEMA 14-50R and that is fine to install on a 20 Amp 240 volts circuit. I have installed my self on a 20 Amp circuit 240 volts, my Prime charges in about 4.5 hours from fully depleted battery and draws max 15 amps while charging. Hope this helps.