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Does my laptop need to be grounded when charging?

I generally leave my MacBook Pro attached to its charger while listening to music files played thru my dac via USB.  I have noticed that when I am barefoot and gently rub my finger over the metal surfaces of the laptop that I feel a slight fuzziness as if there is stray voltage going through me.  It is not a shock per se and the sensation goes away when the charger is unplugged.  The charger does not have a ground prong. Should I ground the metal cover of the laptop? Should I get into the habit of disconnecting the charger when I listen to music files from the laptop?  Is this normal?
jc4659

Showing 2 responses by jea48

jea48
4,570 posts
 
@jc4659
Is the AC plug on the charger polarized? If not try reversing it 180 in the wall outlet and see if that helps.
jea48
4,570 posts
 
I have noticed that when I am barefoot and gently rub my finger over the metal surfaces of the laptop that I feel a slight fuzziness as if there is stray voltage going through me. It is not a shock per se and the sensation goes away when the charger is unplugged.
I assume the floor is bare concrete or maybe some type of conductive tile. Concrete is conductive. Especially when poured on grade, earth.

I believe what you are experiencing is a very low level electrical shock. Your body may be sensitive to low levels of electrical current passing through it.
Just a guess a difference of potential exists between the laptop and the concrete floor. I would suggest you wear slippers on your feet or some other type of insulator
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