Hi, building first PC and have an anti static wrist strap because my floor is carpet. I plan to build my pc on a wooden desk which sits on carpet. The question is this, do I need to plug my PSU into the wall socket then attach the wrist clip to the case? There are loads of debates on the internet about this, some people say this can cause death or something. Or should I just attach the clip to the case with no PSU connection?