I am in the process of installing a main lug sub panel off the meter main.
The meter main has the neutral & ground buss bars bonded, and the new sub panel has them isolated. I've also removed the swing arm that bonds the neutral buss to the backplane as per code.
Here is the problem....this sub panel from CutlerHammer not only has the neutral buss bar up on plastic risers, but the ground buss bar is also up on risers.
This creates a condition where there is no continuity from the sheet metal of the panel to either the neutral buss or the ground buss.
If there is a short to the panel and the panel becomes "hot", some one touching the sheet metal would become the path to ground.
How can this be right???
Why do the isolate the ground buss from the sheet metal by raising it up on plastic risers just like the neutral buss???