What type of certification is required for electrical installation according to the National Electrical Code (NEC)?

The correct choice reflects the requirements outlined in the National Electrical Code (NEC), which specifies that electrical installations must be performed by individuals who are licensed electricians. This licensing ensures that the person has undergone the necessary training and education to understand electrical systems, safety standards, and local codes. A licensed electrician is knowledgeable about the NEC and is capable of executing installations that maintain safety and compliance with legal requirements.

Being a licensed electrician entails meeting specific criteria set forth by local or state jurisdictions, which often includes passing examinations and completing a certain number of hours in training. This helps ensure that electrical work is performed safely and competently, reducing the risk of electrical hazards in residential, commercial, and industrial settings.

The other options do not engage with the requirements set by the NEC for installation work. A certified technician may possess skills relevant to electrical systems but lacks the legal requirement for licensure. A registered contractor implies a business entity rather than an individual with the necessary licensing for electrical work. An electrical engineer typically focuses on the design and theoretical aspects of electrical systems rather than on practical installation and safety compliance as defined by the NEC. Thus, the emphasis on having a licensed electrician is fundamental to meeting both safety and regulatory standards in electrical installation.