Electrical · E-PDCGB

Fire Smoke Dampers (Fsd)

Elements

About this detail

This diagram details the electrical connections and control wiring for fire smoke dampers connected to a fire alarm data loop and emergency power source. Up to twenty fire smoke dampers are permitted per twenty-ampere single-pole circuit, or a maximum of twelve amperes, whichever is smaller. Power is supplied from an emergency one hundred twenty-volt alternating current panel connected to a twenty-ampere single-pole circuit breaker, along with a twenty-four-volt direct current power supply from the fire alarm control panel. An interface relay with a twenty-four-volt direct current coil and twenty-ampere rated normally open contacts is located adjacent to the panelboard serving the circuits. Each damper circuit incorporates a four-inch square deep junction box housing a self-indicating type fuse holder with a fuse sized per manufacturer recommendations.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details