11
Instruction Manual IM01500001E
Effective July 2011
Pow-R-Line switchboards
EATON CORPORATION www.eaton.com
Once the conductors are pulled inside the main section, the
cables should be formed in the space provided. Clearly identify and
segregate conductors by phase and neutral. Care should be taken
in forming insulated cables to ensure that no insulation is forced
permanently against the edges of any metal parts.
Using appropriate tools, the installer must strip the conductor insula-
tion sufficiently to fill the entire barrel of the connector with bare,
un-insulated conductor. Conductor must be stripped without damage
to the conductor strands. Bare strands should be of equal length
(flush) on the end cut.
Do not strip off more insulation than needed. Exposure of bare
conductor outside lug can compromise clearances.
The connector and conductor should be free of all foreign debris.
Never clip cable/wire strands in order to fit within connectors. If
cable/wire does not match the rating of the connector, contact
the manufacturer.
Mechanical set screw lugs are the most common. Use an antioxi-
dant compound, if required. Insert bare conductor into lug so the
bare conductor fills the full length of the lug body. Tighten lug, then
torque to levels indicated on the switchboard label.
If compression lugs are used and supplied with the switchboard, the
lugs will be mounted on the incoming lug pad. Remove lugs from
the pad. Use an antioxidant compound, if required. Use a crimping
tool approved for that specific lug manufacturer and lug size. Follow
instructions provided by the manufacturer of the crimp tool.
Once the lug is affixed to the conductor, re-install the lug on the lug
pad using the existing hardware. Torque hardware using information
provided on switchboard labeling. Refer to Appendix A, Table 2 for
torque values.
Other requirements for rear-connected switchboards
On systems that require short-circuit current ratings above 10,000A
rms, cable bracing may be required to restrict cable movement.
Lashing and lacing cables accomplish this.
Cable bracing instructions
For short-circuit ratings above 10,000A rms, install cable braces
per the following instructions:
1. The material required for the cable braces is 3/8”diameter
nylon rope
a
or any rope having a minimum tensile strength
of 2,000 pounds
b
.
2. All cable conductors of a load circuit are to be bundled together
with five adjacent wraps of rope at distances of 6 inches and
12 inches from the supply terminals for ratings up to 200A
maximum. (See Figure 20 and Figure 21.)
a
Wellington Puritan Mills, Inc., Madison, GA, Catalog Number 10989.
b
Norva Products, Carrolton, GA, Catalog Number TPR12.
Figure 20. Cable Bracing
Figure 21. Cable Bracing
Cable
Cable
Lugs
Rope
6.00
(152.4)
Aø
Bø
Cø
6.00
(152.4)
Optional
Cable Support
Application
Cable Lugs
Typical
Side View
Cable Support
Detail
Cable
Cable
Supports
Support
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