I noticed that with my two 2012/2013 MacBook laptops overall several european countries, in different homes: that "twitchy" feeling on the metal case of the laptop when plugged without grounding.
Do all of these houses have serious electrical issues?
The house in which I live now does that to my old MacBook Airs if I convert my Macs's chargers' hybird CEE 7/7 plug (two poles + grounding) to a flat two-pole europlug (no ground).
I can reliably reproduce the issue in several houses, over several countries.
But if the plug is grounded, everything seems normal.
What's going on?
I'm here since six months, with shitloads of electrical things ongoing (including the whole swimming pool machinery). And everything appears to be working fine.
Should I be worried?
I mean: I can reliably reproduce what TFA describes. My old MacBook Airs do that all the time if there's no ground.
Floating earth ground definitely leads to tingly problems with some macbooks. My guess is some sort of capacitive discharge issue with some of the designs, but others have definitely noticed this problem.
The two prong connector was always a bad idea, but frayed wiring on the charger or bad house wiring can also cause it to float.
I've come to the conclusion that Apple and all their "amazing" engineering doesn't actually know how electricity works, because these silly issues plague their products.
The fuzzy MacBook is pretty annoying, but how about the Mac Studio, which can trip a GFCI when plugging it in (which, as far as I can tell, it almost certainly a design flaw and not a fault with my particular unit)
I expect this kind of stuff from the tat bought on eBay, where it's promptly thrown in the bin.
Do all of these houses have serious electrical issues?
The house in which I live now does that to my old MacBook Airs if I convert my Macs's chargers' hybird CEE 7/7 plug (two poles + grounding) to a flat two-pole europlug (no ground).
I can reliably reproduce the issue in several houses, over several countries.
But if the plug is grounded, everything seems normal.
What's going on?
I'm here since six months, with shitloads of electrical things ongoing (including the whole swimming pool machinery). And everything appears to be working fine.
Should I be worried?
I mean: I can reliably reproduce what TFA describes. My old MacBook Airs do that all the time if there's no ground.