According to Wendy's specifications, which wiring method is not permitted?

The correct choice highlights that, according to Wendy's specifications, the use of MC (metal-clad) wiring is not permitted. This can be tied to specific safety, performance, or aesthetic standards that Wendy's adheres to within their operational guidelines. Each type of wiring method has distinct characteristics and applications.

In commercial settings like restaurants, factors such as flexibility, ease of installation, and environmental resilience play critical roles in selecting appropriate wiring methods. For instance, NM (non-metallic), BX (flexible metal conduit), and EMT (electrical metallic tubing) can be more suitable for certain installations due to their lighter weight, ease of handling, or better grounding capabilities compared to MC, which is typically more rigid and may not be as easily integrated within the desired layout or design of a restaurant environment.

Understanding the context of why specific wiring methods are favored or dismissed within a commercial building is essential. Wendy's specifications likely prioritize methods that enhance safety and comply with local building codes while supporting the operational efficiencies of a fast-paced restaurant environment.