Originally Posted By: rmoore This post was automatically imported from our archived forum.
Shawn…
Seems to me that you already know the answer. It's wrong! As you didn't mention an insulated neutral, I assume this is for a 240 only device (EG...a water heater) as opposed to a 240/120 device such as a range. In either case, the bare grounding conductor should only be used for that (grounding) and should not be attached to the "floating" neutral bar in a "sub" panel.
How dangerous is it? During normal circumstances probably not very, but like most of the grounding/bonding system it's that one shock you are trying to avoid when enough strange things happen. Kind of like a car's air-bag. You'll never know it's hooked up wrong until you swerve to avoid the squirrel and hit the tree. 
Call for repair. It's a simple fix.
-- Richard Moore
Rest Assured Inspection Services
Seattle, WA
www.rainspect.com