S&C Instruction Sheet 695-505 15
Installation
Grounding
STEP 1. Connect the ground pads on each way of the
switchgear assembly to the system ground in
accordance with the user’s standard grounding
practice. See Figure 9 on page 14.
STEP 2. If the switchgear is furnished with the
continuous ground bus (catalog number sufx
“-O”), connect the ground bus to the system
ground in accordance with the user’s standard
practice.
STEP 3. Use the equivalent of 4/0 copper (or cable sized
in accordance with the user’s standard practice)
in either a single or multiple connection to
realize the maximum momentary rating of the
switchgear assembly. For a multiple cable
connection, cables smaller than 1/0 copper or
equivalent should not be used.
STEP 4. Connect the cable concentric-neutral wires to
the grounding system as appropriate.
Fault Indicators
Fault indicators are to be furnished by the user and
installed in accordance with the manufacturer’s instruc-
tions. Optional mounting provisions for fault indicators
(catalog number sufx “-F1” or “-F2”) are available for Vista
SD Underground Distribution Switchgear. If mounting
provisions are specied, mount the fault indicators on the
mounting brackets and attach the associated sensors to
the cables below the cable terminations.
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