I made this video. also used some security wire from lowe's i believe.
Nice video! Thanks for posting!
A few comments/questions:
What kind of wire is it coming through the wall? Is that in conduit? Or is that NM cable (romex). If it is NM cable then it is only good to 40a continuous, not 48a. It is limited to the 60c limit.
Why did you chose to put two sets of wire in the first conduit rather than branching at the ceiling? Was it to limit number of splices? While that is a good idea in general, you now have four current carrying conductors in one conduit and have to de rate for that. Now you are probably still fine since it is all #6 gauge (I have not run the math), but it is something to be aware of. You actually could probably make an argument that you never have more than two current carrying conductors active at a time (or if both are active they are at half current), but I have not read those code sections (from a practical standpoint I would have absolutely zero concerns with this setup).
How come you twisted the wires together before pulling in the conduit? I don’t think that is recommended as it might risk damaging the wire during pulling and it fills the conduit more.
If you post pictures of your breaker panel and the stickers on the door we may be able to find you a breaker setup that will allow a 60a breaker. Might have to move a couple circuits around.
Note that the disconnect rule does not kick in until *over* 60a. I also contend that you can simply use a locking clip on the circuit breaker in most cases. The disconnect does not necessarily need to be in the garage. I have posted the code sections in multiple threads about this.
A question: You did a nice job on that offset bend out of the main junction box. So clearly you have access to a bender. How come you used factory 90’s then? I like how clean field bends are. Less couplers!
And finally, on the RS-485 - I have not read the Tesla instructions, but I have always been told in the past to only ground the shield wire on *one* end. If you ground on both ends it can create a ground loop which can cause interference in the signal wire. Also, if there was a fault of the high voltage wire you never want your low voltage wire being the current path. I doubt either will be an issue in this install since you have the conduit grounded and the ground wire, but still, best practices apply.
Nice job though! I want to be a two Tesla household!
