To expand, I have an installation where we are going to wire for 3 phase capability but only use single phase with the current charger. The length of the run from the MCB to the carport is approx 30'. As Mark has said, there with be a circuit breaker at the MCB and an isolator switch at the box I have made to house the wall connector. I am mounting the wall connector in my box myself. I will post photos when it's all done.