4 ms·

How? The (US) charger's only got 2 pins so ground stays unconnected.

• Tsiklon 6mo ago
  The extension cable they used to include in box with the computers, it has the third pin for the charger brick connector which is wired to ground
  • 15155 6mo ago
    There's zero chance that the DC ground in the laptop is tied to earth ground in the charger: they use LLC resonant converters and flyback converters (depending on vintage) - an earth ground tie would defeat the purpose of these isolated topologies.
    • jahnu 6mo ago
      However it’s wired up the fact is the electric buzzing feeling goes away if you use a grounded extension cable instead of two pin.
    • namibj 6mo ago
      No they isolate L and N not PE.
• bombcar 6mo ago
  I don't know if this link will work - https://www.chargerlab.com/wp-content/uploads/2022/06/2022061718103949.jpeg https://www.chargerlab.com/wp-content/uploads/2022/06/202206... but that metal round pin thing is a ground; and the three-prong cable connects to it.
• pxx 6mo ago
  There are grounded duckheads for this purpose, e.g. https://amzn.to/4cnzuef https://amzn.to/4cnzuef (note out of stock. I guess your best bet is to use a UK duckhead, but half of those have a dummy ground...) if you take the plug part from the brick you'll note that there's only two pins but the button-like thing is a ground as noted in a sibling, the power adapter extension cable does plumb the ground through (https://www.apple.com/shop/product/mw2n3ll/a/power-adapter-extension-cable?cid=aos-us-seo-pla-accessories https://www.apple.com/shop/product/mw2n3ll/a/power-adapter-e...)
  • jahnu 6mo ago
    Got a bunch of cheap ones from Ali Express and they worked fine.
• BobAliceInATree 6mo ago
  Apple sells a 3-pin extension cable US Version: https://www.apple.com/shop/product/mw2n3ll/a/power-adapter-extension-cable https://www.apple.com/shop/product/mw2n3ll/a/power-adapter-e...