Nursing home facility with a Type I electrical system has a life safety branch ATS and a critical branch ATS. Very typical setup, so no issue there. What is a bit atypical is the presence of another large ATS upstream of the two other ATS. It is a large Zenith ATS, pictured here:
Any ideas why this ATS would be present? NFPA 99 was not out at this time, and the ATS does not have indicator lights or other position indicators per NFPA 110.
Any ideas why this ATS would be present? NFPA 99 was not out at this time, and the ATS does not have indicator lights or other position indicators per NFPA 110.