115vac felt on my macbook pro case during charging

During charging of my new Macbook pro , a " tingle " is felt on the Macbook pro case. I am using a 3 prong power strip that has a ground led installed on the device and is "showing green" when plugged into the wall socket so I know the power strip is working properly. The power adapter for the Macbook pro is " two prong " device and has a " floating Ground " My XPS dell had the same problem and dell sent me a " 3 prong " power adapter which fixed the problem.
Please advise if Apple sells a " 3 prong adapter " to correct this issue.
-- Joe M

No damage. When opening the computer to change memory cards it is recommended that you touch anything metal on the case to discharge any static on your body. Obviously Apple wouldn't recommend this if it was at all likely to cause damage. However, extraneous charges on the actual chips, circuitry, etc can cause damage. These are all insulated from the chassis itself and things such as HD casing.
Neville

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