- First Name
- David
- Joined
- Jan 28, 2019
- Threads
- 60
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- 1,305
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- 2,054
- Location
- Santa Cruz
- Vehicles
- Macan Turbo,Cayenne Hybrid, 911(s) GT3/Convertable

specifically yes for a TeslaTap or similar it should be rated for 50 amps or more - the North American Macan's maximum charge rate is 9.6 kW (or 40 amps) which is a 50 amp circuit breaker - even if you plug into a 19.2 kW Tesla Wall charger your Macan's OBC will limit the charge rate to 9.6 kW and not overtax the amp rating of the TeslaTap (or similar) adapter…Thanks for the very helpful information, all! If the image below is the Porsche Universal Charger (PUC) that I can expect to be delivered with my new Macan, I agree there doesn't seem to be much need for the Tesla Mobile Connector (TMC), although, at a glance, the TMC appears to be less bulky, with lighter and more flexible cables. Not having seen either in person, though, I can't say for sure.
Question for @daveo4EV (along with appreciation for your very informative and detailed posts):
You recommended a TeslaTap. If I were to get a TMC, I think the correct model would be the 50 AMP Tesla to J-1772 Adapter but if I were to use the PUC that will come with my new Macan, there is no need for any adaptor - correct? Also, when the Porsche-approved NACS adaptors are finally made available to us, do you anticipate the need for any other NACS adaptor and, if so, which brand and model would you recommend?
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personally I see the "adapter" as mutli-vehicle - and purchased a 19.2 kW rated TeslaTap - which means it will work for _ANY_ J-1772 EV I happen to use it with…current and future. But I"m a bit nuts and that is probably un-necessary as most EV's are 11 kW or less these days.
the "amp rating" on a TeslaTap (similar) is NOT a "limit" on the charging - but rather a measure of the Adapter's "robustness" under "load" - if you were to purchase a hypothetical 40 amp TeslaTap and then use it with a 19.2 kW rated Chevy Hummer and a 19.2 kW rated Tesla Wall Charger Gen 1/2 - the adapter's components (wire gauge, plastics, connectors) are not rated for that sort of high capacity AC powerflow - and if used for long enough (2 or more hours would be my guess) certain components may fail/melt since they are only suitable for 40 amp's of 240V AC current…
if you buy a 50 amp rated TeslaTap it will _NOT_ limit your charge rate to 50 amps - it may simply "melt/fail" if subjected to more "load" if you use it for long enough - it gets particularly dicy in terms of thermal load during summer when outside ambient temps are higher…
the amp rating on a TeslaTap is a rough measure of how robust the unit is under thermal loads expected based on high charger rates…and it is rated to not fail/melt in those conditions.
although a 20 amp TeslaTap may work fine for 10 min even at 19.2 kW - I wouldn't recommend - but electrical components like these do not fail immedidately - it's a matter of load over time and how much thermal load is allowed to build up over time.
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