Technically you could hack the not grounded 3 prong UK (Type G) adapter (that I mentioned before) to connect the ground prong to the grounding pin as shown in this tutorial. The metal is more visible in the magnified picture on the right. The left picture from this answer shows the difference. So at Apple, the rule of thumb is that if it is an extension cord, then the socket is connected to the ground pin so it is probably grounded, if it is the small adapter, then there is no connection in the socket so no grounding for you: You have to carry that extra 1.8 meter of cable tho. This is a 3 prong UK plug that has a grounding prong, but they haven't connected it! Fortunately at the extension cord there is a connection. Obviously a 2 pin/prong plug is not grounded, you'll need one with 3 of them, but even in this case you have to check if the adapter's socket/shoe has metal in it (AKA is connected to the ground), because you can't take that granted at Apple! Just check out this picture from this article: The charger can be grounded because the metal pin that holds the adapter is (subtly) also the ground:
I have on occasion intentionally grounded one of the plastic feet with foil when I am waiting for the electrician to fix an outlet or I am working in a location where I can't get a proper ground. This sort of ground current drives me nuts (even though it's normally totally safe).
#2017 macbook pro power cord extension mac#
You'll have to check with an electrician or take your mac to another outlet that is known to be properly grounded if you are already grounding it through the wall if you still feel the tingle with a grounded cord. You shouldn't be able to feel any tingle due to you being better grounded than the mac if your outlet is properly grounded. The listing has ended Starting bid: US 11.99 0 bids shipping. MagSafe Charger Lot Power Adapter Extension cord MacBook Pro Air iBook. The adapter article from Apple has some good tips and a nice picture. Details about MagSafe Charger Lot Power Adapter Extension cord MacBook Pro Air iBook.
(Or unearthed to some) Use a three conductor plug to ground the device and check your MagSafe pins to be sure they extend fully and mate correctly with the Mac. In the US, standard power means the "duck head" two prong connector is ungrounded. Your specific mac only grounds itself through the magsafe connector if you are using a grounded plug.
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