I have a Sig X vin # 3xx soon to be delivered hopefully. My electrician installed a Nema 14-50 per Tesla website and I did not realize the Sig X came with a 72 amp charger and why that made a difference. To upgrade to take advantage of 72 amp charger I am being told I need to scrap the Nema 14-50 install new 100 amp fuse install new conduit and need wall charger to take advantage of 72 amp charger at home for $3k. I already paid $2k for the Nema 14-50 and have not even used it yet. Does 72 amp charger help at all with Nema 14-50? Do I need a wall charger to take advantage of 72amp charger? Must I replace Nema 14-50 to take advantage of 72 amp charger?