Southwire Wire Plenum 500 18-2 P40133-1C

The Southwire P40133-1C is an 18 gauge, 2 conductor plenum rated cable supplied in a 500 foot package, for control and thermostat wiring in air handling spaces.

18/2 is a standard configuration for low voltage control wiring: two conductors for a simple switched circuit, a damper actuator, a sensor connection, a condensate switch, or a two wire thermostat interface. The 500 foot length suits commercial work where multiple runs are pulled from a single reel.

The plenum rating is the specification that governs where this cable may be used. In commercial construction, the void above a suspended ceiling is frequently used as the return air path, and any cable routed through that space must be listed for plenum use. The reason is direct: standard cable jackets produce dense toxic smoke when involved in fire, and the air handling system would distribute that smoke throughout the building. Plenum rated jacket materials produce substantially less smoke and resist flame spread.

Where the code requires plenum rated cable, substitution with standard cable is not a technicality but a life safety violation, and it is a common finding in inspections of control wiring installed by trades unfamiliar with the requirement.

Applications include HVAC control and thermostat wiring, damper and sensor circuits, and low voltage interconnects in commercial buildings with plenum return ceilings. Note this item is currently catalogued under plenums and may warrant recategorisation under wiring and connectivity.

Brand

Southwire

SKU

P40133-1C

Category

Plenums

Weight

8.5 lbs

Dimensions

11.50" x 11.50" x 4.50"

Price

$197.00

Availability

In stock

Rating

4 / 5.0