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BD Loop Installation for Asphalt or Gravel Roads, Brick Pavers, or Concrete

Directions for quick and easy layout of BD Loops Step #1 Determine the placement of the yoke (intersection of loop and lead-in wire) and secure it in place. Pace off 8 foot 8 inches at 62° for a 4' x 8' or 9 foot 1 inch at 70° for a 3' x 9' loop size and ground stake* or cable tie* the corner in place. See Figure A, Step #1 above. Note: BD Loops are packed from the factory with the corner opposite of the yoke with a folded bend in the loop for easy identification Step...

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BD Loop Proper Phasing Installation

Click on image to enlarge Each BD Loop is pre-phased at the factory. This phasing relationship is clearly marked on every loop. The marking consists of a black mark on one of the loop leads as it exits the loop yoke. By placing both loops with the black phase indicator flowing in the same clockwise or counter-clockwise direction and wiring the loop lead-in in series as shown above, the loops will be properly phased. This feature takes the guesswork out of installing two loops to one detector....

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