Boeing 707 - Page 343

• Subject 20-00-15 for the insulation removal procedures.
Table 93
INSULATION REMOVAL LENGTH
Splice Part Number
Insulation Removal Length L
(inch)
Target Tolerance
BACT12C101 0.72 ±0.03
BACT12C12 0.34 ±0.03
BACT12C21 0.65 ±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
(6) Wind a layer of the insulation tape on each of the two wires for the side of the splice with two
wires.
Make sure that:
• The edge of the tape is aligned with the end of the wire insulation
• The tape goes around the circumference of the wire a minimum of two times
• The tape makes a 100 percent overlap.
(7) Assemble one end of the butt splice.
2446140 S00061544325_V1
INSULATION REMOVAL LENGTH
Figure 126
ASSEMBLY OF SPLICES
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-12
Page 153
Jun 15/2021D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details