EMERGENCY LIGHT INSTALLATION DETAIL in AutoCAD, dwg file.
<p>This Architectural Drawing is AutoCAd 2d drawing of EMERGENCY LIGHT INSTALLATION DETAIL in AutoCAD, dwg file. <strong>When power is lost, AC power is therefore lost, so the backup battery unit turns on and transfers power to the lighting system</strong> (this is called DC power). When AC power is restored, the emergency lighting batteries must be fully charged within 24 hours.</p>