Details

National Loop Co. 17' (2.5' X 6') Direct Burial Vehicle Detection Loop with Custom Length Lead-In for 8.5' Wide Driveways - X-NL8.5-14

Made for new paving projects, the National Loop Co. 17' Direct Burial Vehicle Detection Loop with Custom Length Lead-In is a factory-wound 14 AWG loop that installs flat on the graded sub-base. Paired with a compatible loop detector, it senses the metal mass of a passing car or truck and signals the gate operator to open, hold, or reverse, providing one of the two means of entrapment protection UL 325 requires for automated gates. Installation is a lay-and-pave job: set the loop on the graded sub-base, run the lead-in to the detector, and let the paving crew cover it. Its 6' side spans the travel lane while the 2.5' side runs in the direction of traffic, leaving roughly 1' 3" of clearance on each edge, an arrangement well suited to older urban row homes, narrow driveways, and single-car gravel drives in rural areas.

Features:

• Factory-set turn count means optimal read range without any on-site adjustment
• More cost-effective than hand-wound loop installations
• Fills the non-contact detection role UL 325 assigns to vehicle loops in a 2-device entrapment protection system
• Designed for vehicle detection with gate operators, parking barrier gates, overhead doors, traffic signals, arming devices, and vehicle counters
• Wound from one continuous, non-spliced wire, leaving no splice point between the loop and lead-in to fail
• Heavy-duty, liquid-tight conduit shields the loop from sharp stones, chemicals, ground heaving, and harsh weather
• Fully assembled at the factory, so there is nothing to wind, count, or connect before paving

Specifications:

• Loop type: Direct burial
• Total loop length: 17'
• Loop dimensions: 2.5' x 6'
• Lead-in length: Custom length
• Wire gauge: 14 AWG
• Wire material: Polypropylene-wrapped copper wire
• Best-suited driveway width: 8.5'
• Manufacturer: National Loop Company (NLC)
• Made in America: Yes