My unit was installed two weeks ago by Qmerit's local subcontractor (Dallas). The Qmerit rep required several photos, but didn't seem able to figure out the installation from the photos. He had not yet had a Lucid job, and didn't seem to understand the V2H concept. So I told him about it. I specified a 100 amp breaker. Regarding the wiring, he said they typically used 6 gauge for chargers; I told him we needed heavier gauge (3 or 4) wire to handle the higher amperage. He agreed to have heavier gauge wire on the truck, but that piece of information didn't get to the subcontractor who actually did the installation. Bottom line, my Qmerit rep wasn't prepared and expected a more generic installation.
When the subcontractor arrived to do the installation, he told me that he hadn't learned much from the photos so he had to figure it out onsite--with my help. We already had conduit run from the main breaker box to the garage (with a pull) in anticipation of the charger installation, so he just had to find it and pull the wires through. He decided to use 3 gauge, but didn't have any on the truck. From there, he basically used the supplied instructions to set up and mount the charger.