Rockwell Automation Allen-Bradley CENTERLINE 2500, Instruction Manual

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Publication 2500-IN001A-EN-P - May 2006
Installing Cable 4-3
Cable Bracing
The CENTERLINE 2500 MCC bus work system has been tested and is
qualified to withstand maximum short circuit forces exceeding the short circuit
withstand ratings for the MCC. Incoming line cables and outgoing feeder
cables also need to be supported to withstand the same short circuit forces.
Follow appropriate codes and standards when bracing incoming and outgoing
cables.
There are many sizes and types of cables, as well as different means by which
the cables can be supported. Recommended methods are shown in Figure 4.1,
Figure 4.2 and Figure 4.3.
In Figure 4.1, glass fiber reinforced tape or glass filament tape is used. The
taping should be continuous from the point the cables enter the MCC to the
point the cables are terminated. It is important that cables are wrapped several
times for additional strength. Cable slack should be drawn up during wrapping
so that individual cables are supported by the tape as a single mass.
Figure 4.1 Securing Cables with Glass Tape
In Figure 4.2 cables are lashed in an interwoven configuration using nylon
rope. The rope lashing should be continuous from the point the cables enter
the MCC to the point the cables are terminated. Other types of rope lashing
may be utilized. Cable slack should be drawn up during wrapping so that
individual cables are supported by the rope as a single mass.
Figure 4.2 Securing Cables with Nylon Rope