During the Hualien earthquake on April 3, 2024, multiple cases of damage to suspended busway systems were reported. The insulation layers of the busway conductors were worn due to vibration, leading to burnouts and short circuits within the systems. In severe cases, this could result in fires, posing significant threats to life safety. To prevent damage to busway systems and maintain the functional operation of buildings, this study conducts a post-disaster investigation and reinforcement study of suspended busway systems. The research focuses on low-voltage armored busways commonly used in Taiwan. Numerical models were developed using the analysis software SAP2000, and their accuracy was verified through shake table experiments. Four different suspension configurations of straight busway specimens were designed, employing angle steel commonly used in Taiwan as reinforcement material. The specimens were divided into reinforced and unreinforced groups. System natural frequencies and displacement time-history responses were measured through shake table testing and analyzed for comparison. The reinforcement design referenced typical Taiwanese construction methods and international standards, including China’s GB codes and NFPA 13 clearance requirements. Finally, the validated numerical models were applied to a practical case study of a busway system in an electronics factory in Tainan, proposing specific reinforcement recommendations. The outcomes are expected to provide reference for future engineering design and seismic retrofitting practices.