The 'wet bar' here seems to morf into an 'illegal' 2nd kitchen (after finals). A cooking appliance appears, followed by the furniture delivery to complete the illegal 2nd apt. That's the zoning guys situation!
As to design...as an EC I had numerous chats with the HO's to determine intended uses.
As an AHJ, I can only go by the NEC, and I look forward (LOL) to the AFCI's coming soon here.
The intersystem bonding point is another situation...
