I currently have a 240volt NEMA 14-50 that I had installed to spec for my first Model S P85D with dual chargers and currently use the mobile connector. I just received a HPWC that I would like to have installed and have just received a used Model S P100D to replace the P85D. Does anyone know if there is new wiring or other significant work that is needed to place the HPWC in the location of the NEMA 14-50 240V system? Is it just a matter of changing the amps in the circuit breaker area (e.g. increase to a 100 amp circuit breaker)? I looked at configuring a new 2018 S and they now longer offer dual chargers so I am not sure on the 2017 if it matters or not. But assuming it does, with a single charger only, will I benefit from using the HPWC or will a single charger only set up limit the speed of the charge with the HPWC set up. I am assuming in the P85D charger the only real benefit of the dual charger was at the superchargers but I am not sure. Thanks for your input.