41Publication 2100-IN012C-EN-P - April 2009 41
Chapter
3
Installing Conduit and Cable
Installing Conduit
When installing conduit, make sure it is installed according to local
codes - to assure water and moisture cannot enter or accumulate in
the MCC enclosure. Conduit must be installed so they are compatible
with the NEMA rating of the MCC. The conduit should be placed away
from the horizontal ground bus to avoid damage. We recommend that
the conduit be positioned to minimize cable bending and maintain
relative vertical alignment to incoming connections.
Bottom Entry Conduit
Follow this procedure if your conduit is entering from the bottom.
1. Prepare the installation site so the foundation is level.
2. Before the MCC is installed, place and stub up conduit
approximately 2 in. (51 mm) above floor level, making sure all
incoming conduit is clear of the horizontal ground bus.
For approximate section base dimensions and ground bus
locations, refer to Installation Procedures, Chapter 2
, or
elevation and floor plan drawings shipped with MCC.
For approximate bottom entry locations and wiring schemes for
main fusible disconnects, main circuit breakers, and incoming
line compartments, refer to Mains and Incoming Lines
Dimension Reference, publication 2100-TD018
.
Top Entry Conduit
Follow this procedure if your conduit is entering from the top.
1. After the MCC is in place, leveled, and the sections are joined
and spliced, bring conduit into the top of the incoming section.
For approximate top entry locations and wiring schemes for
main fusible disconnects, main circuit breakers and incoming
line compartments, refer to Mains and Incoming Lines
Dimension Reference, publication 2100-TD018
.
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