Figure 4-63. - Wire trailer with nylon rope used to pull conductor through blocks.
wire, or you may use the running block or over-the- crossarm methods. Figure 4-63 shows the running block method.
No matter how you string the wire, you will have to mount the reels on some support that allows them to revolve freely. This is usually done by raising a reel on reel jacks, as shown in figure 4-64. A metal rod strong enough to support the reel is put through the hole in the center, and the rod and reel are jacked up on each side with the leg of the T-base away from the reel, as shown. You may have to fasten down the bases of the jacks to keep the strain from upsetting the reel. When you are jacking up, it is necessary only to raise the reel just clear of the deck.
When you are stringing wire in rough terrain, the best method is to anchor a reel to the ground at the end of the line by means of guys run to driven stakes. Then run a rope line over the crossarms or through running blocks mounted on the crossarms for a distance of 1,000 to 1,500 feet. This is accomplished by a lineman climbing each pole and placing the rope in place.
After the rope has been strung over the crossarms, one end is secured to the wires to be pulled, and a couple of turns are taken with the other end around the winch drum on the line truck. The drum is then rotated to haul in the rope and the wires with it. As each wire passes a crossarm, a lineman must climb the pole to set the wire in proper position and guard against twisting.
To keep a paying-out reel from revolving too fast, set a brake or drag against the reel. This can be simply a board, held against the outer edge of the reel by a helper. As a wire or wires are being pulled, enough crew
Figure 4-64. - Cable reel on reel jacks.Continue Reading