ETC recommends ELTS2 cabinets be fed with a constant source of emergency power. Normal power drops out, and the generator-fed Emergency power takes a few seconds to start up. ELTS2 will lose power whe...ETC recommends ELTS2 cabinets be fed with a constant source of emergency power. Normal power drops out, and the generator-fed Emergency power takes a few seconds to start up. ELTS2 will lose power when Normal power drops out. It will detect the lack of Normal power, and switch into Emergency mode. If the Emergency power startup and subsequent ELTS2 booting combined take longer than that limit, you could be held liable for a code violation.
