Thank you for your insight. My electrician is an EV charging expert but will make sure to ask about the receptacle specifics.
My only concern was the inefficiency of mobile charging cables, assume its more of a problem when using it with a standard household outlet at 4-5 mph. When I had a Model Y, I charged exclusively at home with the mobile charging cable and my electric bill doubled in the summer to near $600. My electrician said when he was charging his old model X 300 miles a night, his bill only went up by $100/month using an L2 charger due to the enhanced efficiency of it.
It never hurts to ask!! Measure twice, cut once.
Mobile charging cables, like the Lucid, are not inefficient. Exact same efficiency as Level 2 wall units. They just charge at a slightly slower speed/rate. A KW is a KW. With mobile, you get 40 amps at 240v. 9+ kw charging an hour. A commonly used level 2 wall unit, like Chargepoint, you get 40 plugged in and up to 48 if hardwired, with 11 kw charging per hour. I would bet that 90% of home level 2 charging is done at 40 amps. The cost to you per kw used is the same regardless if you charge at 32,40,48 or 80.
Perhaps your Electrician saved money from time of use pricing. Pricing in Denver is double in the afternoon vs late night. The Lucid charging timer on the dash works perfectly with the Lucid and most othe mobile cables.
To go further into the weeds, all mobile cables and all Level 2 boxes do NO charging. They are fancy switch boxes with GFCI and safety features, like over temp sensors. And wall boxes have wifi to send you and the power company info. Both mobile cords and boxes connect 240v AC to the car, and the inverter in the car does the charging of the battery, converting 240v to DC.
Remember, the main purpose of Level 2 is to get overnight or end of the day charging. I charge my Air at night when it gets to 30-35%. I have 48 amps. Charging starts at 9 pm for cheapest rate. I always get a ping on my phone at 1 or 2 am that charging is done at 80%. When I use the Lucid mobile cord at a friend's house, charging at 40 amps, it takes maybe half an hour or so more. Big deal. I am sleeping. So every night that I change, I am topped up in the AM. I would guess that even if I ran SOC down to 10% and needed 90% the next morning, 40 amp overnight would be fine. (I am sure several on the forum can do exact level 2 timings off the top of their heads, right
@DeaneG 
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Sorry for the long list. Like
@DeaneG , I find this fascinating. I need to get on the bike more!!
