25
6.11
Half Tapping Using 4008 Half Tap Module
The MS2 Splicing System can be used to half
tap a run or through cable without cutting the
conductors by using the 3M brand 4008 Half
Tap Module. The base and body/bottom of the
module are colored green and contain no cut-off
blades. Through wires placed in the base will
be electrically connected by the elements, but
not cut-off.
SLACK
Minimum Requirements:
600 Pair or less ....8" (205 mm)
600-1500 Pair ......8" (205 mm) – 14" (355 mm)
The preferred splicing sequence is to start with
the back bottom groups working up the back
side.
Note:
Exception – Layered cable must be spliced
starting with the center groups. This
requires a larger opening to assemble the
cable in 25-pair groups.
When pulling slack, always allow binder groups
to fall so that they will be on each side of the
support tube when it is mounted. The cable
twist will establish the most natural position.
It is preferred to last the tap cable on top of the
cable to be removed.
Lay run (or through) conductors only in the
module base with conductors to be removed out
the front of module (spring side.) Use one
splicing head.
6.11.1 Open cable sheath and expose conductors the
length of the splice closure plus the amount of
necessary slack.
6.11.3 Identify binder groups.
Note:
Layered cable must be counted and identi-
fied in 25-pair groups. Verify all spare
pairs.
6.11.4 Mount splicing rig. Use one splice head on
short traverse bar.
Splice head should be positioned so that the two
banks of modules will end up positioned 1" (25
mm) to the left of center of the opening, and 1"
(25 mm) to the right of center. See Section
6.11.11.
832611
6.11.5 Place adapter in splice head. Place module base
onto adapter in splice head.
Always place run (or through) wires into base,
making sure to pull slack toward cable to be
removed.
6.11.2 Pull cable slack until sheath ends are at recom-
mended opening for splice closure.
893742
893742
OLD C.O.
FIELD
OLD C.O.
FIELD
Module Base
Adapter
893743
OLD C.O.
NEW C.O.
