Does a Fire Pump System require a separate or dedicated ATS (Automatic Transfer switch) different from the building or house ATS. If so what is the reason behind it. What pertinent code can I reference this?
The ATS must be listed for fire protection service. Also, there are many other requirements that pretty much makes it be dedicated to the fire pump controller. See NFPA 20 section 10.8.
NFPA 70, National Electrical Code may be your best source to answer your question.
"If you work with the connections or controls for fire pumps, you need to understand Article 695 of the NFPA 70.
Today, you can expect to find a fire pump in almost any public building or factory. Whether your company is doing maintenance, retrofits, or new construction, someone on your team-and it could be you-is likely to work with the power sources or control equipment for fire pump motors. How can you know the work you do will ensure the public safety?
Fortunately, Article 695 will tell you.
The Article covers the installation of:
The NEC prefers an individual source, rather than multiple sources, for a fire pump motor. This source must be able to carry the locked-rotor current of the fire pump motor(s) and the pressure maintenance pump motors. It must also be able to carry the full-load current of any associated fire pump equipment. Finally, the single source is “reliable” only if the AHJ agrees that it is-review your design with the AHJ before implementation. The NEC allows for two individual sources:
Article 695 - Fire Pumps
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