Final answer:
NEC requirements can only be waived by the Authority Having Jurisdiction, which is the entity responsible for enforcing the code. Other construction professionals like architects, engineers, or foremen do not have this authority.
Step-by-step explanation:
The National Electrical Code (NEC) is a set of standards for the safe installation of electrical wiring and equipment in the United States. According to the NEC, specific requirements can only be waived by the Authority Having Jurisdiction (AHJ). The AHJ is typically a government or organization responsible for enforcing the code. Other professionals involved in construction, such as architects, engineers, or project foremen, do not have the authority to waive NEC requirements. It's important to consult local codes and the AHJ when dealing with electrical installations to ensure compliance with safety standards.