Which code provides guidelines for emergency power generators in high-rise buildings?

The correct answer is found in NFPA 110, which specifically addresses emergency power systems, including generators used in various settings such as high-rise buildings. This code outlines performance requirements for both the emergency power supply systems and the associated equipment that ensures operational reliability during power failures, particularly in situations where life safety is a concern.

While NFPA 70 deals with the National Electrical Code, providing guidelines on general electrical installations, it does not focus specifically on emergency power systems. The International Building Code (IBC) 2018 sets forth structural and safety standards for buildings but does not provide detailed requirements for emergency power generators. The International Fire Code (IFC) 104 deals with general administration and enforcement of fire safety codes, which may touch upon emergency systems but lacks the specificity of NFPA 110 regarding emergency power generation. Therefore, NFPA 110 is the clearest and most relevant source for guidelines regarding emergency power generators in high-rise buildings.