MacBook Pro at 220 volts, could feel current through aluminum case

[terraphantm]

what do you mean "turn the plug around"? both my wife and her 2011 mba and my rmbp have this problem here in seoul, south korea. we can sometimes feel it in our iphones as well.

The part that goes into the wall - just rotate it 180º and plug it back in. Sometimes that helps (at least here in the US)

 

[recharge23]

The part that goes into the wall - just rotate it 180º and plug it back in. Sometimes that helps (at least here in the US)

ah, got it. will give it a try when i get home from work. thanks!

 

[Erasmus]

The part that goes into the wall - just rotate it 180º and plug it back in. Sometimes that helps (at least here in the US)

You know, powerpoint plugs have different shapes around the world. And many aren't rotationally symmetric. i.e. Australian ones...

Anyways, now for the general rant at anyone who's still here...

I use my MBP mostly with the 2-prong adapter, and do not get any shocks. I sometimes get very faint buzzing in my earphones when something metal touches the case, but I would bet that's static electricity built up in me, going into the case.

Basically, this has NOTHING TO DO WITH APPLE apart from them choosing to have a conductive metal case. It has everything to do with poor earthing connections, or charge building up in YOU (or me) and being discharged through the case when you touch it.

And with the whole 1 Volt can kill you thing... Yes, 1 volt can be lethal, in the same way that someone throwing a feather at you can be lethal if it's travelling at Mach 12. All that is required is a relatively small amount of current to flow across your heart to screw up its rhythm. The voltage only needs to be sufficient to generate that current.

Rant over.

 

[fpsBeaTt]

Yes, 1 volt can be lethal, in the same way that someone throwing a feather at you can be lethal if it's travelling at Mach 12.

That just cracked me up.

 

[terraphantm]

You know, powerpoint plugs have different shapes around the world. And many aren't rotationally symmetric. i.e. Australian ones...

Anyways, now for the general rant at anyone who's still here...

I use my MBP mostly with the 2-prong adapter, and do not get any shocks. I sometimes get very faint buzzing in my earphones when something metal touches the case, but I would bet that's static electricity built up in me, going into the case.

Basically, this has NOTHING TO DO WITH APPLE apart from them choosing to have a conductive metal case. It has everything to do with poor earthing connections, or charge building up in YOU (or me) and being discharged through the case when you touch it.

And with the whole 1 Volt can kill you thing... Yes, 1 volt can be lethal, in the same way that someone throwing a feather at you can be lethal if it's travelling at Mach 12. All that is required is a relatively small amount of current to flow across your heart to screw up its rhythm. The voltage only needs to be sufficient to generate that current.

Rant over.

Well obviously the implication is that if you have a symmetric plug, try rotating it. If you don't, then you can't.

 

[fkt1]

first the excessively high running temps...

now you guys are getting shocked because it doesn't ground?!?

sorry.. but why the hype over MBPs"?

I'm considering buying a new generation when released, but this thread seriously turned me off...

WTF?

"It's not that bad..." "It doesn't hurt anything..." 🙄

overheating and shocking are clear signs of horrible craftsmanship.

[doublepost=1520205614][/doublepost]Yes I agree !
Am with Apple since the beginning and it's the first metal case Mac in my hands (MacBook Pro "Core 2 Duo" 2.4 13" Mid-2010 ) I just bought second hand.It's constantly "humming" vibrationnaly wise. Insane ....
WTF indeed!!

 

[537635]

It's called physics. Or electricity. Google it. Nothing to do with "horrible craftsmanship".

Any device with the outside made of conductive material will respond like this when connected to ungrounded plugs. Happens with iPhones (before X, because this one is made of glass), Macbooks, iPads. Of course with non-apple stuff made of aluminum as well.

Solutions:
- use a grounded charger (for macbooks use the extension cable, which you need to purchase separately)
- use a case
- use a wireless charger (for phones)
- do not use the device while charging...