MacPro getting shocked

how 'bout :
Look on the inside of the shorter plug adapter, and on the inside of the extension.

The difference is the metal. The extension grounds you, the shorter plug doesn't.
 
Yeah mate, I noticed that yesterday. I also offered my personal experience of two macs exhibiting the same symptoms, and the solution, yet everyone seemed to ignore me as well.

:)
 
Sorry, why are we discussing this, take it back to the store and get another one, there is no need to talk about it just do it LOL. Its not normal if it hurts or is uncomfotable, if you can notice it then its wrong.
 
Because, LOL, it's not a fault with the laptop, it's a problem with the earthing of the laptop. This is caused, according to two posters in this thread and a google search, by not using the supplied transformer.

This thread is full of parrots.
 
I was not sure if he was revering to the tingle which is normal or the random electric shocks that you get from some aluminium and unibody macs.

This thread is full of trolls.
 
I think that you will find that the transformers that ship with all macbooks are Class II - Look for the little square inside a square symbol - indicating a class II appliance.
The method of protection against electric shock in the case of class II equipment is either double insulation or reinforced insulation. In double insulated equipment the basic protection is afforded by the first layer of insulation. If the basic protection fails then supplementary protection is provided by a second layer of insulation preventing contact with live parts.

In practice, the basic insulation may be afforded by physical separation of live conductors from the equipment enclosure, so that the basic insulation material is air. The enclosure material then forms the supplementary insulation.

Reinforced insulation is defined in standards as being a single layer of insulation offering the same degree of protection against electric shock as double insulation.

Therefore using either the tethered transformer cable or the adaptor plug neither of them use an earth - so it should make no difference at all. If a class II appliance requires an earth to stop you getting even minor electrical shocks it is defective. As you are getting electrical shocks, whether minor or major, off a class II appliance then it is defective and should be replaced.
 
Your post: http://www.ebme.co.uk/arts/safety/part4.htm

Hi. I'm a link to an internet search engine where you make informed statements on this subject.

I personally have experience of this which in two cases was solved by grounding. There's no electric shock, it's a slight charge which results in a tingling sensation when you move your hand across metal surfaces of ungrounded macbooks, imacs and mac mini's.

Is it a fault? Maybe, but it's consistent with all units and Apple wont change it. Is it solved by grounding? Yes.
 
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I'm using the mains cable rather than the single plug adapter and I'm amazed to hear that the single plug head thingie doesn't have a connection to deck.
 

Why do I need to make a citation I am not writing a dissertation just merely pointing out in my experience the aluminium macbook pros and unibody computers can on occasion cause low voltage electric shocks whether it be static or otherwise, using them at work all the time I notice it frequently and even repeatedly after just a few seconds. Its like a small buzzing and a sharp pain.
 
My old Vaio (I'm now a convert ;)) did this all around the trackpad (where my wrists rested) but I ignored it and it never bothered me or got any worse.
 
Thanks for the help and links guys much appreciated, seems a known problem and the other charger does fix the issue :)
 
I just had this problem, it's so weird. I knew my laptop felt wrong but I couldn't stop touching it. :D

Then I unplugged it and it went away.

So in simpleton speak, this issue might be a fault with my charger? I am using the extended cable. I've already had one charger that melted (old MacBook) and it cost me a fortune for a new one, Apple need to sort themselves out.
 
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