Fig. 957.—Wireman's "come along" with hook and tackle.
| Span in Feet | Temperature Fahr. | ||
|---|---|---|---|
| 30° | 60° | 80° | |
| Sag in Inches | |||
| 75 | 1¾ | 2½ | 3⅛ |
| 100 | 3 | 4¼ | 5⅜ |
| 130 | 5⅛ | 7 | 8⅝ |
| 150 | 6¾ | 9 | 11¼ |
Ques. How is the wire drawn out?
Ans. In drawing out the wire, it is customary to use a wire clamp, or "come along." This tool is attached to a block and tackle, or drawn in by hand, and, as soon as the proper force has been applied, the wire is held, while the lineman secures it to the insulator.
Fig. 958.—Lineman's block and fall with "come alongs" for stretching wire and holding same when making splices.
