Looking at the Apple World Travel Adapter Kit, I'm guessing the only places where the Mac adapters do come grounded by default are countries that use the UK plu

Looking at the Apple World Travel Adapter Kit, I'm guessing the only places where the Mac adapters do come grounded by default are countries that use the UK plug (BS 1363) [1], at least for plugs shipped after 2010 [2]: https://www.apple.com/us/shop/product/MD837AM/A/apple-world-travel-adapter-kit https://www.apple.com/us/shop/product/MD837AM/A/apple-world-... [1] https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets:_British_and_related_types#BS_1363_three-pin_(rectangular)_plugs_and_sockets https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets:_Br... [2] https://support.apple.com/three-prong-ac-wall-plug-adapter https://support.apple.com/three-prong-ac-wall-plug-adapter