Tesla Model 3 Public Charge Cable
To use the public chargers in New Zealand that have a type 2 socket you will need a Type 2 to Type 2 charge cable.
The model 3 has a 11kWh onboard charger so the ideal cable is the 3 phase 22kWh Type 2 to Type 2 cable.
This will allow you to charge at 11kWh or add around 75km per hour of charge. They are available in 5m and 8m. You do not require a cable for the Tesla and Charge net chargers as they have a cable attached.