Electrical · E-5CNHA

Data-Loop to Next Fire Alarm Data-Loop

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Wiring diagram detailing the connection of fire smoke dampers to a twenty-amp single-pole circuit and a twenty-four-volt direct current power supply. The layout includes an interface relay with a twenty-four-volt direct current coil and twenty-amp rated normally open contacts located adjacent to the serving panelboard. Each fire smoke damper circuit utilizes twelve American Wire Gauge conductors and includes a four-inch square deep junction box equipped with a self-indicating fuse holder. A maximum of twenty fire smoke dampers are permitted per twenty-amp single-pole circuit, or a maximum of twelve amps, whichever is smaller.

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