It all depends on your available power. Start at the breaker box. What is max power output? It should be labeled 100 or 200 amps. If 100a you could overload your circuits. 200a should be all good, as long as the car has its OWN decided line. You'll need to install at LEST a 40 amp breaker, but a 60a will better handle most conditions.
If you don't know, ASK AN ELECTRICTION!!!