I asked the question during a grounding seminar ....talking about grounding in USA residential homes with 240/120 panel. I wasn't quite satisfied with the answer. The question is.....what dangers are introduced when you remove the ground rod from a service entrance like the main panel in a home. And lets assume water line is not used as a ground so the ground is completely floating. Here are my thoughts: I believe the breakers are still going to pop in a hot to ground situation due to tying the neutral and ground together in the panel......so any short will hit the center tap of transformer and trip breaker regardless of earth rod or not. Someone mentioned the voltage may drop in panel....not sure what that's about. Someone mentioned voltage may be higher....someone mentioned you may end up using your neighbors ground rod.......all heresay at this time. We are clearly going to lose lighting protection. One danger I can think of is that these appliances need to shed trickle current due to any leakage inside or even static charges. So normally, ground bleeds any of this. Without ground...deadly charges may build up. And to add more confusion....let's talk about 3 phase feeders (NO neutral) on a aluminum ladder in a factory. When grounded properly.....when hot wire touches ladder....we pop the breaker. But how is this current returning? Is it going thru the ground all the way back to the electric company? Or is something else happening? I'm guessing there is trickle current all over the place. If you think about a 500 KV line coming down the power lines.....those insulators on the towers have a resistance of a finite number rather than infinite number, Since V=IR.......small current must leak down any insulator into the ground. Even just a 12KV line must be leaking even a little at any insulator. Again, does this leakage go back to the source...electric company? Can anyone enlighten us further on the subject?