I am a supporter of a 'single point grounding' system and also believe that such a system is not achievable when the NEC must also depend on the NESC for some of the requirements.
It will be interesting to see the ROP's for the 2005 NEC, which apparently Don has some, along the thought of ' single point grounding' or at least better definitions for Grounded, Grounding, Bonded, Bonding.
Even though the Vd (voltage drop) is very low on the metallic raceway 'in parallel' with the 'Grounded Conductor' between the meter and the Main Disconnect, the amperes carried by the metallic conduit is very high on an unbalanced 120/240V 1Ø 3W system.
