78
Section 2 Installation
Copyright Goodheart-Willcox Co., Inc.
Bend the cable
sharply to buckle it.
Twist against
the direction
of the spiral.
Cut the armor and
trim off sharp edges.
Figure 4-8. Snips may be used to strip the armor from AC.
Code Alert
Section 320.100
Construction. Type AC cable shall have
an armor of fl exible metal tape and shall
have an internal bonding strip of copper or
aluminum in intimate contact with the armor
for its entire length.
anti-short bushing: A red, split, plastic sleeve placed
between the wires and the rough edge of the armor
in AC.
• Aviation snips. The fi rst step is to bend
the cable sharply where the armor will be
cut. This will cause the interlocked armor
to disengage. Twist the armor to force it
to expand and expose one twist in the
armor. Place one jaw of the snips under this
exposed section and cut the armor. Remove
the armor and trim any sharp corners. See
Figure 4-8.
• Roto-Split®. The specifi c directions will come
with the tool when you purchase it, but here
are the basic steps. First, place the cable into
the channel of the tool. Squeeze the handle to
hold the cable in place. Turn the crank until
the pressure decreases. Remove the cable
from the tool and rotate the armor until it
breaks free. See Figure 4-9.
After you have stripped the armor from the
cable, you must install an anti-short bushing.
This red, split, plastic sleeve is placed between
the wires and the rough edge of the armor.
Make sure to place the split of the bushing
opposite the armor end for maximum protec-
tion. See Figure 4-10. This bushing keeps the
insulation from rubbing against the sharp edge
of the armor. The bushing must be in place to
pass an electrical inspection. Purchase plenty of
bushings when buying armored cable.
When the anti-short bushing is in place,
bend the bonding strip back over the bushing
and wrap the cable as shown. Add the connector
and tighten the setscrew or the clamp. The
setscrew type of connector cannot be used on
aluminum AC. See Figure 4-11.