I have installed my first HPWC. Anyone with questions on the installation please reply here or email me directly. I am an electrical contractor in BC, Canada. 100A breaker, 40ft cable, Happy owner! *Disclaimer: All information provided is based on Canadian Electrical Code and my personal experience. I am not an associate of Tesla or SolarCity and information should be used at your own discretion.
Brian welcome to TMC. We don't allow solicitations for business in the general forum but we're happy if you want to share your experience, folks can get in touch with you if they're looking for help in your area.
Do you have a service disconnect intalled? I thought code requires one since the HPWC is considered to be an appliance.
In non-commercial installations, I believe that the circut breaker can be the disconnect. I installed one anyway because of the distance to the panel of about 100 feet.
Canadian electrical code requirements for a disconnecting means are required when the charger is connected to a breaker 60 amps or larger. The disconnecting means is required to be within site of the charger AND capable of being locked open. Not sure if a circuit breaker is interpreted as lockable as other clips or clamps are required to facilitate this. I wouldn't interpret a circuit breaker as meeting this requirement in a residential installation. These requirements differ slightly from the normal code requirements for a disconnecting means ( like for a motor or equipment load which allows locking in lieu of line of sight ) Clean installation though. They don't leave a lot of space for back wiring in that enclosure, from what I have seen of them.