Table 6
CAU OF SLEEVE ADAPTERS
CAU Boeing Standard Color
36 BACS13S063B Red
65 BACS13S128C Blue
138 BACS13S156C Yellow
2. ASSEMBLY WHEN THE WIRE SIZE IS SMALLER THAN THE CRIMP BARREL SIZE
A. CAU of the Conductor and the Crimp Barrel
(1) Find the CAU of the conductor. Refer to Table 1.
(2) Find the CAU of the crimp barrel.
Refer to:
• Table 2 for the CAU of a terminal
• Table 3 for the CAU of a butt splice
• Table 4 for the CAU of a parallel splice.
(3) If the CAU of the conductor is not within the minimum and maximum CAU of the crimp barrel, it is
necessary to increase the CAU of the conductor.
For example, an AWG 20 wire and an AWG 12 wire can be spliced in a NAS1388 size 12-10 butt
splice. However, the CAU of the AWG 20 conductor must be increased by a minimum of 31 CAU
and a maximum of 126 CAU because:
• The CAU of the AWG 20 conductor is 12
• The minimum CAU of the size 12-10 splice is 43
• The maximum CAU of the size 12-10 splice is 138.
Refer to:
• Paragraph 2.B. for the assembly with the conductor folded back
• Paragraph 2.C. for the assembly with a splice adapter
• Paragraph 2.D. for the assembly with a filler wire stub
• Paragraph 2.E. for the assembly with a filler wire loop.
B. Assembly with the Conductor Folded Back
NOTE: Usually, a conductor that is folded back on itself does not sufficiently increase the CAU of the
conductor. For the example in Paragraph 2.A., an AWG 20 conductor that is folded back has a
CAU of 24 which is less than the necessary CAU for a size 12-10 splice.
ASSEMBLY OF TERMINALS AND SPLICES UNDER SPECIAL CONDITIONS
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-22
Page 8
Oct 15/2015D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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