(9) Do Step 9.E.(8) again to assemble the other end of the butt splice.
(10) Put two layers of the insulation tape on the splice assembly.
(a) Tightly wind the first layer of tape on the splice assembly.
Make sure that the layer:
• Starts 0.6 inch minimum farther than the end of the splice
• Stops 0.6 inch minimum farther than the end of the splice at the other end of the splice
assembly
• Makes a 50 percent overlap.
(b) Tightly wind the second layer of tape on the splice assembly in the opposite direction of the
first layer.
Make sure that the layer:
• Starts where the first layer stops
• Stops where the first layer starts
• Makes a minimum 50 percent overlap.
F. Internal Conductor Splice for a Shielded Wire or Cable - One Wire to Two Wires for High
Temperature - Tape
For the conditions that are applicable for:
• The repair of a wire or a cable with a splice, refer to Subject 20-10-13
• The selection of the correct sealed splice configuration, refer to Paragraph 1.C.
Refer to Figure 137.
(1) Find the CAU of the conductor.
Refer to Paragraph 1.D. for the procedure to calculate the CAU of the conductor.
(2) If the CAU of the conductor is less than the minimim CAU for the butt splice, increase the CAU of
the conductor.
Refer to:
• Table 15 for the minimum CAU of the butt splice
• Paragraph 2. for the applicable conditions and procedures for the increase of the CAU.
(3) Make a selection of a butt splice from Table 15.
CONFIGURATION OF THE SPLICE ASSEMBLY
Figure 137
ASSEMBLY OF SPLICES
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-12
Page 162
Jun 15/2021D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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