Reading the prior post about electrical panels got me thinking so I checked mine. I have one main panel and two subs. The sub about 50 feet away is wired as was stated. In other words the neutral and ground are wired and kept separate. However, the second subpanel is on a 100 amp circuit breaker in the main panel and is wired with two wires and ground and the neutral and ground are bonded in the subpanel. There also appears to be a separate smaller separate ground wire. This panel is directly adjacent to the main panel so they are very close. This is how it was done by the electrician when the house was built about five years ago. Is this OK? Does it have something to do with the panels being so close that they are allowed to bond the ground and neutral? Is there a distance limit which allowed the electrician to do it this way?