CONNECTING/SPLICING ELECTRIC WIRES

TM 9-1300-277

5-9. CONNECTING/SPLICING ELECTRIC WIRES

WARNING

THE FIRIDG WIRE WILL BE

SHUNTED AND GROUNDED AT THE

INITIATING

PCINT

PRIOR

CONNECTION OF THE BLASTINC

CAP.

THE

PERSON

MAKING

THE

CONNECTION WILL WORK AS FAR

FROM BLASTING CAP AS CAP LEAD

WIRES WILL ALLOW WITH BACK

TURNED TO TIE CAP TO MINIMIZE

INJURY IN CASE OF PREMAT'TURE

DETONATION.

NOTE

Other methods of splicing may be

used as long as electrical continuity

is maintained.

Figure 5-9. Wire splicing.

a. Insulated wires, before splicing, must have the

insulating material stripped from the ends. Expose

about e centimeters (3 inches) of bare wire (fig. 5-9.

(2) Method 2.

detail A), and remove any foreign matter such as

enamel by carefully scraping the wire with the back of a

(a) Place the two wires to be

knife blade or other suitable tools. The wires should not

connected, side by side, with free ends pointing in same

be nicked, cut, or weakened when the wires are bared,

direction and wind them together by twisting.

and multiple strand wires should be twisted lightly after

scraping.

(b) Tape to ensure complete insulation.

b. Connecting may be accomplished by any one of

c. Splicing. The following precautions will prevent

the following methods.

a short circuit.

(1) Method 1 (fig. 5-9).

(1) If pairs of wires are spliced, stagger the

two separate splices and tie with twine or tape (detail A,

(a) Point free ends in opposite

fig. 5-10).

directions (detail A), join with a few tight twists around

each other, and bend remaining ends up, away from

(2) An alternate method is shown in detail B.

joint (detail B).

Splices are separated, not staggered, in the alternate

method.

(b) Twist these ends to form a pigtail

(detail C), which is at right angles to connected wires.

(3) Whenever possible, insulate splices from

ground or other conductors by wrapping them with

friction tape or other electric insulating tape.

one of the wires (detail D). Tape connection to ensure

complete insulation.

5-9