I was vacuuming my shop floor (concrete slab) today with my Rigid shop vac with the stock plastic hose and a wide plastic attachment. My head touched the aluminum housing on a service lamp and I received a very strong and loud jolt of electricity...it freaked me out. I've got minor discomfort where the arc contacted my scalp. I've never encountered such a strong jolt from static buildup. It didn't help that I was wearing rubber Crocs (my std shop footwear) so none of the static buildup was grounding.
This is the same vac that I use for ROS dust extraction, which also is an issue with static shock although not nearly as sever as what I experienced today with the large hose and large suction tool attachment.
So now I'm paranoid to even turn on the vac without wearing some type of grounding leash (copper tape wrapped around my shoes and a connecting wire stuffed into my sock?).
Is/are there shop vacs that are designed to discharge static buildup some place other than onto the user?