There is one electrical code, so why bastardize it to fit into the IRC?
2018 IRC
The International Residential Code (IRC) establishes minimum requirements for one- and two family dwellings and townhouses
using prescriptive provisions. It is founded on broad-based principles that make possible the use of new materials and new building designs.
The benefits of devoting a separate code to residential construction include the fact that
the user need not navigate through a multitude of code provisions that do not apply to residential construction in order to locate that which is applicable. A separate code also allows for residential and nonresidential code provisions to be distinct and tailored to the structures that fall within the appropriate code's scopes.
It is important to understand that the IRC contains coverage for what is conventional and common in residential construction practice.
Chapter 35 Electrical Definitions. Chapter 35 is the repository of the definitions of terms used in the body of Part VIII of the code. To avoid the potential for confusion and conflicting definitions,
Part VIII, Electrical, has its own definition chapter.
Codes are technical documents and every word, term and punctuation mark can impact the meaning of the code text and the intended results. The code often uses terms that have a unique meaning in the code, which can differ substantially from the ordinarily understood meaning of the term as used outside of the code.
The terms defined in Chapter 35 are deemed to be of prime importance in establishing the meaning and intent of the electrical code text that uses the terms. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.