a steady pull, tape about 1 1/2 inches beyond the
insulation at one
end of square knot and back over the knot to about 1 1/2
inches beyond the
insulation on the opposite side of square knot (Figure 6-
19, Chapter 6, FM
(3) Work the tape back again to the center of the splice to complete
the taping with electrical insulation tape.
i. Start taping with friction tape to protect the electrical insulation
tape from either end of square knot, about 1/2-inch beyond the electrical
j. Continue taping to a point 1/2-inch beyond the electrical insulation
tape on the opposite ends.
k. Always test wire line for faults after splicing.
Learning Event 3:
VISUALLY INSPECT WIRE LINE.
Fault location calculation can be verified by visual inspection.
field wire splice and insulation should be carefully inspected.
Inspect wire with your hands and eyes, by looking and feeling for
damaged insulation or where splice is poorly made (Chapter 11, FM 24-20).
Check wire line in areas where wire is exposed to much wear from
traffic and where wires rub against posts (Chapter 11, FM 24-20).
When you find a splice, if the splice appears good, and the conductors
are even in length, the splice should be given a strong, hard pull.
If conductors of field wire splice are not of equal length, the splice
should be cut out and the wire respliced. A short conductor at a splice may
break in an overhead road crossing span.
Wire should be carefully inspected and pulled for tensile strength.
Tape not firmly adhering to the wire must have the splice cut out, wire
tested, and wire respliced.
When damaged insulation or poorly made splice is found, more time and
labor is saved by cutting the line before and after the exposed wire and
splice wire than retaping old splice.
Test wire line in both directions after line is cut.