GE Industrial Solutions Evolution Series E9000 - Manual (Page 11)

10
Evolution Series E9000 Installation & Maintenance Guide
Figure 16. Top conduit entry space for 20-inch and 22-inch sections
Table 3. Dimensions for Figures 15 and 16
Equipment Wiring
Main Incoming Power Cables
Refer to the motor control center drawings provided by
GE for the location of the main disconnect or incoming
line terminals and the direction (top or bottom) of cable
entry. Cable-bending room provided within the vertical
section will meet or exceed National Electrical Code
requirements.
Incoming line sections are provided with cable supports.
Incoming cables must be firmly secured to withstand
the significant forces that may be generated during a
short circuit .
Cables secured at each support, as illustrated in Figure
17 and Figure 18 (600A example), will adequately
brace cables for faults of 100K RMS symmetrical
amperes, based on horizontal bus bracing. However,
cables should always be secured at the first support
inside the enclosure and at the support nearest to the
incoming terminals. Insulated bushings are also rec-
ommended at conduit terminations.
Figure 17. Typical top entry of main cables to the incoming-line lug
compartment (600A shown)
Figure 18. Typical bottom entry or main cables to the incoming-
line lug compartment (600A shown)
Align the conduit linearly directly over or as close as
possible to the supports. Run the cable in a convenient
orientation, making sure the cable is located against
the supports before it connects to the cable terminals.
Lash the cable using the following procedure:
Wrap the line cables together and, if provided, tie cables
together with nominal 3/8-inch (9.5 mm) nylon rope or
rope having a minimum tensile strength of 2000 pounds
(8896 N), at 6 inches (152 mm) and 12 inches (305 mm)
from the line terminals. Use five wraps and complete
every additional 6 inches with five wraps or every 1 inch
(25 mm) with one wrap. Use supplied cable supports as
desired. Refer to UL 891.
Individual Unit Wiring
Open the vertical wireway door(s) and the top and/or
bottom horizontal wireway hinged covers. All doors
can be removed, if desired, by extracting hinge pins or
removing the hinge.
When pulling, bending, and terminating field wiring,
avoid scraping, cutting or otherwise damaging
cable insulation or strands.
Width Dimension A Dimension B
20" 20" 17.56"
24" 24" 21.56"
30" 30" 27.56"