I have A515-51 laptop and I charge it everyday to same power socket. Today I connect it to power socket and also connected it to TV via HDMI cable. The laptop gave me electrical shocks near the mouse trackpad area. The power outlet has nothing to do with it because I charge the laptop every day and loads of other devices on that same power outlet. Also I use HDMI cable on my Dell laptop without any issue.
I read another post on Internet about this issue with Acer :
http://www.tomsguide.com/answers/id-2893030/electric-shock-coming-laptop.htmlPlease suggest what to do if its a known issue with Acer.