In a recent high rise bldg. I saw where exit lights and light fixtures with integral battery back-ups were installed, eventhough there is an emergency generator with its transfer switch installed and which provides emergency power upon the failure of the normal power. I believe this type of installation goes beyond what the NEC and NFPA 101 requires. I have not seen this in the many years I have been working in the electrical field. Is this a new requirement I am not aware of? albert miranda Reply to this comment |