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SECTION IB-1G-500
INSTALLATION & OPERATION INSTRUCTIONS
PAD-MOUNTED SWITCHGEAR TYPE PSI
REV. 1.6 - NOVEMBER 2017
PAGE 4
Figure 5
Figure 7
Figure 8
601 Old Airport Road • Bristol, VA 24201 Phone (276) 669-4084 • FAX (276) 669-1869 • www.federalpacific.com • ISO9001:2015
Figure 6
The optional B4/B5 lift-off barrier is provided to meet the
requirements of Section 381-G of the National Electrical Safety
Code. The B4/B5 barrier (if provided) may be removed as fol-
lows:
1. Disengage security bolts at the top of the B4/B5 barrier.
See Figure 6.
2. Grasp nylon lifting loops, remove barrier from support
hooks and remove barrier from unit. See Figure 7.
3. B4/B5 barrier may be reinstalled by reversing the steps above.
Figure 9
Customer Cable Connections
With draw-out barrier assembly removed, customer cables
may be easily terminated per the following procedure:
1. The hanging weight of the primary cables must not be al-
lowed to place undue strain on the switch/fuse termination
bus. Should this situation exist, cable supports must be
used. The mounting holes in the switch/fuse termination bus
and the cable connector must align to prevent undue strain.
2. Make up the primary cable connections per user URD
operating procedures, cable manufacturer instructions, and
cable terminator manufacturer instructions.
3. Remove surface oxides and coat both surfaces with suitable
joint compound.
4. Attach cable connector to the switch/fuse termination bus
using 1/2-inch hardware as shown in Figure 8.
5. Connect the concentric neutral wires and enclosure
grounding pads inside enclosure to establish a ground sys-
tem conforming to user's standard grounding procedures.
NOTE: The maximum momentary rating of the switchgear
must be considered when selecting cable size for connecting
switchgear to system ground. Refer to unit rating plate.
6. Install and connect surge arresters or fault indicators, if ap-
plicable.
7. Install draw-out barrier system. (See section on barrier
system removal).
Figure 10
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