8
4.6
Connections to Metal Clad Switchgear Assembly
4.6.1
Indoor Switchgear
Holes are predrilled in the side of the BreakMaster Load Interrupter Switch structure to match holes provided in
Metal Clad switchgear. Bolt together using hardware furnished with BreakMaster Load Interrupter Switch.
4.6.2
Outdoor Switchgear
a. Position units side by side. Holes in BreakMaster switch side sheet around bus cutout will match holes in metal
clad switchgear flange.
b. Press weather stripping putty on to flange for weather-tight seal.
c. Join enclosures using bolts supplied with BreakMaster switch. Opposite side of metal clad switchgear flange
has nuts welded in place for ease of connection.
4.7
Connection of Customer Power Cables
Cable termination space is provided in the cubicle for top or bottom cable entry as shown on the outline draw-
ings. Adequate electrical clearance must be maintained between cables, energized parts, and grounded metal
parts. It is also the installer’s responsibility to adequately support cables such that insulators or bus bars do not
carry the strain of the cables.
Tin-plated aluminum clamp type terminals are suitable for acceptance of copper or aluminum cable. If potheads
or other special terminations are supplied, termination should be made according to the terminator manufactur-
er’s instructions.
4.7.1
Installation Procedure for Main Cables when Cable Brace is Provided
Align conduit holes in a linear orientation directly over or as close as possible to the braces. Consideration should
be given to installing conduits or sleeves which might be required for future connections.
Run and bend the main cable in a most convenient orientation, making sure the main cable has been located
directly up against the cable braces before it connects to the main cable terminals. Lash the main cable accord-
ing to Figure 4 above, using a 3/8” nominal nylon rope, or a polyester braided rope having a tensile strength of
2000 lbs. minimum, making 6 revolutions around the “A” and “B” phase main cables and 6 revolutions around the
“B” and “C” phase main cables. Continue wrapping the cord around the main cable lashing and around the cable
braces (if applicable), in between the phases, tying a knot to the cable brace or cable as you complete your last
revolution. All revolutions should be made as tight as possible so as to prevent whipping during short circuits. The
nylon rope is not provided.
6"
Maximum
Main Cable Terminals
Cable Brace
Figure 4
BreakMaster Load Interrupter Switch
