No, the unit I purchased has a 3 foot extension adapter that converts the regular plug (I can't remember if it is L6-30 or L14-30) to a 14-50 plug. It is a direct run from the breaker box to the outlet. No ferrules were used. I purchased 6/3 (2 hots, neutral, and ground) wire to install a 14-50R on my wall. It is against code to install the 14-50 without the neutral even if Tesla doesn't use it in their charging system. I have all 4 lights on the unit come on when there is a fault. I just can't remember if any of them are blinking or not. I have never used the value charging as mine is that same as yours (same rate all the time).