Is it normal to have electricity flowing through my side panel screws?

[lhpcopsp]

My PC build is:

CPU: Intel Core i5-8400
CPU Cooler: Cooler Master 212X
MB: ASUS PRIME Z370-A
RAM: Corsair Vengeance RGB Pro (3000Mhz CL15)
SSD: Samsung 860 EVO 2.5'' (250GB)
HDD 1: WD Blue 2.5'' 500Gb
HDD 2: WD Blue 3.5'' 160Gb
PSU: Seasonic FOCUS Gold 550W (Semi-Modular)
Case: Corsair Carbide 400C

I built it myself, but I don't know if I did something wrong. When I plug in the PSU I start feeling electricity flowing through the screws holding the cables' side panel (One side is an acrylic window panel that don't use screws and the other side is just a plain metal panel that covers cables). I tried looking for other points that have the same feeling, but everything's fine, just those damn screws. Could it be because of the PSU? Or is it something that I did wrong when building up my PC?

 

[kraelic]

First check your outlet

https://www.youtube.com/watch?v=mjnGkex4dxQ&vl=en

Also check the motherboard has the correct standoffs to the case, several holes are provided and not every hole is used. It might be shorting to the case from an unused standoff post.