Telecommunications · T-CFWMD

Typical Motion Detector Installation

Elements

Walls Ceilings Decks Millwork / Casework Connections / Plates

Connections

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Motion detectors are installed with ceiling mount and wall mount configurations utilizing octagonal electrical boxes or four-square backboxes with single-gang rings. Minimum three-quarter inch conduit connects the devices to the nearest pull box, cable tray, or security terminal cabinet. Ceiling-mounted detectors attach to the ceiling grid with a T-bar bridge as required, with ceiling wire attached to the deck above. Zone wiring consists of one four-conductor twenty-two gauge West Penn two-hundred forty cable for interior use or West Penn AQC two-hundred forty cable for outdoor or underground use. All fasteners and screws used in security system devices must be tamper-proof.

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