Fremer’s new electrical service was wired to the current code for the AHJ, (Authority Having Jurisdiction), in his area. The wiring and wiring methods used can exceed the AHJ requirements/standards as long as the wiring used and wiring methods used meet the minimum AHJ standards.
AS I have said many times... Code is bare minimum...
With that said, bare minimum Still has to be met...
Example, NO ISOLATED DEDICATED GROUND ROD(s) All grounds rods shall connect to the main grounding system of the electrical service.
Quote:
National Electrical Code 90.1 Purpose:
(A) Practical Safeguarding. The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity. This Code is not intended as a design specification or an instruction manual for untrained persons.
(B) Adequacy. This Code contains provisions that are considered necessary for safety. Compliance therewith and proper maintenance result in an installation that is essentially free from hazard but not necessarily efficient, convenient, or adequate for good service or future expansion of electrical use.
Informational Note: Hazards often occur because of overloading of wiring systems by methods or usage not in conformity with this Code. This occurs because initial wiring did not provide for increases in the use of electricity. An initial adequate installation and reasonable provisions for system changes provide for future increases in the use of electricity.