I have brought this up on other topics, but have not really received a substanial response to my claim. I do not like the idea behind Article 250.58. I understand that the intent of the code is to bring all metallic parts of a premise to the same potential, but isn't this also putting the grounding systems in parallel. My concern is if the grounded conductor were to open on one of the services. With the two separate service electrodes bonded, this provides an additional path of current flow back to the source. This means metallic parts of the system will be energized under normal conditions. Under fault conditions, the service main may never trip due to the higher resistance of the ground path. 250.58 needs to be ammended?