B. Unsealed Butt Splice Configurations - One Wire to One Wire - Insulated Butt Splice
Table 63
INSULATION REMOVAL LENGTH
Splice Part Number
Insulation Removal Length L
(inch)
Target Tolerance
BACT12C12 0.35 ±0.03
BACT12C4 0.53 ±0.03
BACT12C4NK 0.47 ±0.03
BACT12C6 0.53 ±0.03
BACT12C6NK 0.53 ±0.03
BACT12C8 0.47 ±0.03
BACT12C8NK 0.53 ±0.03
D-609-06 0.28 ±0.03
D-609-07 0.28 ±0.03
D-609-08 0.28 ±0.03
NAS1387-4 0.28 ±0.03
NAS1387-5 0.28 ±0.03
NAS1387-6 0.28 ±0.03
NOTE: A satisfactory alternative for an insulated butt splice on one wire is an uninsulated butt splice
and sleeves on one wire. Refer to Paragraph 6.D.
(1) Make a selection of an insulated butt splice from Table 10.
Make sure that the splice has the smallest CAU range that can accept the total CAU of the
conductor. Refer to Paragraph 1.D. for the procedure to calculate the CAU of the conductor.
(2) Find the crimp barrel size of the splice from Table 10.
(3) Make a selection of a crimp tool from Table 40.
(4) Remove the necessary length of insulation from the end of each wire. Refer to Subject 20-00-15.
INSULATION REMOVAL LENGTH
Figure 24
ASSEMBLY OF SPLICES
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-12
Page 67
Feb 15/2021D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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