Publication 2100-IN012C-EN-P - April 2009 15
General Information Chapter 1
Non-sequential numbering may not create a functional or
listing/certification issue. However, MCCs should be installed in
sequential order. Installing MCCs in sequential order helps ensure
proper installation and ensures that factory-supplied documentation
matches the equipment.
You can rearrange MCC sections. However, if a section that uses a
right-hand side sheet with integral, internal mounting flanges is
located on the outside of a lineup, an additional closing kit plate is
required. Refer to CENTERLINE 2100 Motor Control Center End
Closing Plates Installation Instructions, publication 2100-IN069
. MCCs
that contain contain arc resistant features cannot use a section with
integral mounting flanges on the outside of a lineup.
UL/CSA Marking
CENTERLINE MCCs are listed by Underwriter’s Laboratories, Inc. (UL),
Standard for Safety UL 845, and certified by the Canadian Standards
Associate (CSA), Standard C22-2, No. 14.
Due to standards harmonization, a MCC may also carry the cUL
designation. cUL is comparable to CSA certification.
Vertical sections and units are labeled independently. It is possible to
have combinations of labeled and non-labeled sections and units in
the same MCC.
Vertical sections and structure options that are UL listed and CSA/cUL
certified are marked accordingly. All components in a UL or CSA listed
section must be UL listed and cUL/CSA certified. The UL and/or
CSA/cUL designation is an integral part of the section nameplate as
shown on page 14
.
Units and unit options that are UL listed and CSA/cUL certified are
marked accordingly. All options and components in a UL and/or
cUL/CSA listed unit must be UL listed or recognized and/or cUL/CSA
certified. The UL designation is located on the interior of the bottom
plate of plug-in units or on the interior right-hand side plate of frame
mounted units.
UL Label Designation for Units
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