Reddit reviews Q2100 100-Amp Double Pole Type QP Circuit Breaker

> You may think the cost difference between them is trivial, but it absolutely isn’t. The Tesla destination charger is only great for people using Teslas. I agree that Tesla offers quite the steal there, but it isn’t representative of the market.

Tesla to J1772, or charger with the J1772 end.

It costs as much to dig the ditch and rip out the wall for a 12 gauge 20A 240V. Your other points are correct if they have to drop more meters and put in more breaker boxes, though a $20 20A breaker doesn't cost much less than a $30, $50 not on sale, 100A breaker. The wire seems easy enough to calculate, 20amp 4.8kW would be around $0.49 a foot, 40amp 7.2kW is $1.05 a foot, and 100amp would be $4.95 a foot. Maybe aluminium 180amp for $1.35 a foot to a subpanel would make things cheaper for longer runs? Can you just turn aluminium into copper right before the charger, assuming the charger can't just use the aluminium?

> If a lot of hotels aren’t currently providing 19.2kW chargers, it’s for good reason.

According to plugshare, which I can't filter by max power, clicking around looks like 90% of HPWC at hotels support 16kW, some 6kW or 8kW. So your statement is correct, though these hotels aren't only 7.2kW either.

> EDIT: On second thought, I don’t think you even read my comment. You just responded to only the last paragraph like it was some kind of tl;dr. There was so much more nuance to that comment.

I did read it all but your 1MWh example was (an Appeal-to-Extremes)[https://www.logicallyfallacious.com/tools/lp/Bo/LogicalFallacies/30/Appeal-to-Extremes] and didn't want to point it out. Still if you want to talk about it: 200kWh seems very likely for trucks and I would expect closer to 300kWh for a dually. Since 19.2kW is the limit of J1772 that is where I am getting the number from and to your point a 300kWh still wouldn't be able to charge from 10% to 100% but 50% charge is better than 19%. I think Semi will have 1-2MWh but I doubt we will see the J1772 plug on them except maybe to run living area stuff and bms. If Semi do support AC then they might use SAE J3068 3 phase 120A 277V so 57.5kW? but really even a 150kW supercharger might take 8hr+.

As for your comment about 3 decent 7.2kW vs 1 19kW I can't disagree there, why not have 4 19kW that can share 1 line that could very well cost less than 4 independent 7.2kW. I thought I showed that is possible at least for the price of the charger. You could still configure those same HPWC to 7.2kW and share to save a little money on wire and possibly the power provider needing the upgrade their lines. At that point though you might as well run a 20A 120v outlet to every spot to help keep batteries warm. Any hotel that doesn't have a charger I ask if I can use their light pole 120v, really helps prevent a cold soaked battery in the morning even if I only got ~20 miles of range on a 10F night.

Not sure how my comment has a lot of nuance to it, maybe since I had linked to that charger with J1772 like 3 times in other replies so far and thought it was common knowledge here that you can charge any car with an adapter I left those links out, sorry. I wan't trying to personally attack you, I am just giving my option with what I think will be best for all in the long term for overall cost and user experience. It is like I see a lot of USB-PD 5v 3A being installed because everyone is using cell phones but soon laptops are coming out and they will need to buy new 5A wires and adapters. I could be wrong and the statement about if it makes a difference where people stay one day is the speculation here. Interesting times ahead for sure, I can't wait.