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Section 90.1, titled “Practical Safeguarding,” defines the primary purpose of the National Electrical Code as “the practical safeguarding of persons and property from hazards arising from the use of electricity.”
This section also make three important statements about the NEC's purpose:The NEC does not address adequacy. The NEC is not intended to be used as an instruction manual for untrained persons. The NEC is not intended to be used as a design specification. The NEC does not address adequacy.
In other words, following all the code rules will yield an installation that is essentially free of hazards, but it does not guarantee that the installation is sufficient, convenient or adequate for good service or future expansion of electrical use.
It is reasonable to expect that an NEC-compliant installation will be safe, but assuring that an installation will work the way it is intended to or satisfy the needs of the user is the responsibility of the designer, the engineer and the installer, not the NEC.
© Hughes Associates,Inc. 2012