View attachment 874134
Vehicle to X in DC mode is a slam dunk for the NACS.
How about AC? Is it even relevant?
Here is why I think it is:
With the latest price/performance improvements in power electronics, it seems to be cost effective to rectify and voltage convert in the same step.
See IEEE article regarding this trend.
This means that an on board vehicle bidirectional charger should approach cost parity with a uni directional charger.
If that is true, Vehicle to X would naturally be more cost effective in AC mode, since the house inverter could be omitted.
How would the NACS support residential split phase AC then, with NACS having only three pins for power and ground?
My thought is that the whole package, including the vehicle via the NACS through its connection with the panelboard, is listed as an appliance, the inside of which doesn't need to follow code. System specific GFI. Additional L1 L2 auto fuse based on Amps through gnd/neutral, for the case that the load is unbalanced and overtaxes that thinner connector. Alternatively de rate the whole system to the ampacity of the ground connection. One drawback is it could only be installed at the main service panel since that is the only place where ground and neutral are allowed to meet.
Would be interested to hear what people experienced with code and UL listings say about this idea.