Copyright Goodheart-Willcox Co., Inc.
Insert an anti-short bushing, a code requirement, between the
paper and the wires with the bushing turned to cover sharp edges.
Bend the bare ground wire over the anti-short bushing and wrap the
wire around the outside of the armor. This ground wire provides a
connection from box to box. Remove the excess paper. See Figure 10-5.
Slip a connector with the locknut removed over the wires and
armor. Use a clamping connector for aluminum armor and either a
clamping or set-screw connector for steel armor. Make sure the cable
is inserted into the connector as far as possible (the anti-short
bushing must touch the front of the connector with the tab extending
out of the connector). Now tighten the set screw or the clamp screws.
See Figure 10-6.
Remove a knockout from the electrical box and insert the wires
and connector into the knockout hole. Add the locknut and tighten it
with pliers or a hammer and screwdriver. See Figure 10-7.
Armored cable must be supported by a staple or strap every
4 1/2 ft. and within 12 in. of each end. Deviation from these rules is
allowed if the cable is fished into a concealed wall cavity or where it
is impractical to install supports.
70 House Wiring Simplified
Figure 10-5. Inserting anti-short bushing between the armor and the wires.
Caution: All wiring connections and splices must be made
inside electrical boxes.