Electrical · A-4G2HC

Gas Detector Mounting Bracket and Conduit Detail

Materials

Steel Stainless Steel Timber / Wood

Elements

Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage Bolted Connection Embed Plate

About this detail

A mounting assembly for a gas detector source and receiver suspended in a hazardous area consists of a nine-inch by nine-inch by one-eighth-inch thick Type 316 stainless steel detector bracket mounting plate secured by two twelve-inch long strut channels and four one-half-inch channel stud bolts and nuts. The assembly hangs from two five-eighth-inch threaded rods with couplings in Type 316 stainless steel, anchored overhead using five-eighth-inch drill-and-epoxy anchor bolts with a minimum four-inch embedment. Four three-eighth-inch bolts, washers, and nuts in Type 316 stainless steel attach the detector manufacturer-furnished mounting bracket to the plate. Wiring is routed through a three-quarter-inch hazardous area-approved flexible conduit, connected via a conduit sealing fitting and junction box. The detector is positioned at sixty inches above finished floor, maintaining a minimum four-inch clearance to avoid HVAC duct obstructions.

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