Make sure that the crimp barrel size of the terminal lug is the same as the wire size.
NOTE: BACT12AR terminal lugs are indended to be terminated to only one wire. If more than
one wire is to be terminated, refer to Subject 20-30-22.
(2) Remove the necessary length of the insulation from the end of the wire.
Refer to Subject 20-00-15 for the insulation removal procedures.
Make sure that:
• When the wire is in the terminal lug, and the end of the wire insulation is in the insulation
grip of the terminal lug, the end of the conductor extends farther than the end of the crimp
barrel
• The clearance from the end of the conductor is sufficent for the installation of the washer
and the nut
• The conductor does not have nicked or cut strands
• If the insulation is removed by the application of heat, the conductor has not moved from the
center of the wire
• If the insulation is removed by the application of heat, the remaining insulation does not
have blisters or evidence of overheating
• The remaining insulation is not frayed.
(3) If a BACT12AR terminal lug for AWG 12 wire and smaller is not available, and a heat gun can be
used:
(a) Make a selection of a BACT12AC terminal lug from Table 3.
(b) Put a 0.5 inch to 0.75 inch length of heat shrinkable sleeve on the wire.
Make sure that:
• The sleeve has the smallest diameter that will let the sleeve move easily on the wire
• The end of the sleeve is aligned with the end of the wire insulation.
(c) Shrink the sleeve into its position.
(4) If a BACT12AR terminal lug for AWG 12 wire and smaller is not available, and a heat gun cannot
be used:
(a) Make a selection of a BACT12AC terminal lug from Table 3.
(b) Make a selection of a Grade D TFE tape. Refer to Subject 20-00-11.
(c) Wind a sufficient number of layers of tape around the end of the wire insulation.
Make sure that:
• The end of the tape layers is aligned with the end of the wire insulation
• The outer diameter of the layers of tape and the inside diameter of the insulation grip
of the terminal make a fit.
• The tape layers make a 50 percent minimum overlap
• The length of the tape layers on the wire insulation is approximately 1.0 inch.
(d) Assemble a wire harness tie near each end of the tape layers to hold the layers in their
position.
(5) Make a selection of a crimp tool from:
ASSEMBLY OF INSULATED AND UNINSULATED TERMINAL LUGS
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-11
Page 66
Feb 15/2016D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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