We are working on a university building that will have a fire pump. The electrical engineer on this job has asked me if there is any code that explicitly defines if there's an equivalent to the code stating a generator has to kick on within 10 seconds of an outage for a low-rise building as it pertains to electric power. I have referred to NFPA 20, especially A9.2.3 and to NFPA 70, sect. 695 where it's laid out what a reliable power source is.
The problem arising is the AHJ does not want to certify in writing that the power source is reliable. The utility has given a written response that it's a reliable source in accordance with NFPA 20.
Anyone have an issue like this before? If so, how did you handle it to make sure you were good to go in the end without the AHJ giving you the answer in writing?