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SECTION 4: INSTALLATION AND WIRING
4.1 GENERAL
Transfer switches are factory wired and tested.
Installation requires solidly mounting the enclosed unit
and connecting power cables and auxiliary pilot circuits.
Physical mounting procedures and power cable connec-
tions are covered in this section. All other required
wiring or electrical connection references are covered in
a separate Customer Wiring Booklet packed with the
transfer switch. Locate the wiring booklet, review it, and
keep it readily available for reference purposes during
installation and testing. Once a transfer switch is proper-
ly installed and wired, it should be mechanically and
electrically checked for proper installation and operation.
The procedures for these initial mechanical and electri-
cal checks are outlined in Section 6 of this instruction
manual.
NOTICE
To facilitate the procedures described in this sec-
tion, the solid steel shield over the power panel
should be removed. The shield is attached to the
ratchet assembly with four screws. Remove the four
screws and shield until the procedures are complet-
ed.
!
BE CERTAIN THAT THE SOLID STEEL POWER
PANEL SHIELD IS PROPERLY INSTALLED BEFORE
TRANSFER SWITCH EQUIPMENT IS PUT INTO SER-
VICE.THE SHIELD PROVIDES PROTECTION FROM
DANGEROUS VOLTAGES AT THE LINE AND LOAD
TERMINALS WHEN THE EQUIPMENT IS IN OPERA-
TION. FAILURE TO DO SO COULD RESULT IN PER-
SONAL INJURY OR DEATH.
4.2 MOUNTING LOCATION
Choose a location that offers a flat, rigid mounting sur-
face capable of supporting the weight of the enclosed
transfer switch equipment (Figures 4.1). Avoid locations
that are moist, hot, or dusty, however, there are enclo-
sure designs available for special environments. If there
are any doubts as to location suitability, discuss them
with your Cutler-Hammer representative.
WARNING
Check to make certain that there are no pipes, wires, or
other mounting hazards in the immediate mounting area
that could create a problem.
Carefully remove all packing material from the transfer
switch at the mounting location. Even though an equip-
ment inspection was made when the equipment was
received, make another careful inspection of the enclo-
sure and the enclosed transfer switch as packing mater-
ial is removed and the enclosure readied for mounting.
Be especially alert for distorted metal, loose wires or
damaged components.
4.3 MOUNTING PROCEDURE
!
SINCE THE ENCLOSED TRANSFER SWITCH MUST
BE LIFTED INTO PLACE FOR MOUNTING, BE CER-
TAIN THAT ADEQUATE RESOURCES ARE AVAIL-
ABLE FOR LIFTING TO AVOID PERSONNEL
INJURIES OR EQUIPMENT DAMAGE.
Refer to Figures 4.1 for enclosure and power panel
mounting dimension references. All vertical design
transfer switch equipment enclosures and power panels
are of the same design. Only the overall physical dimen-
sions change. Note in Figure 4.1 that the enclosure is
provided with four elongated mounting holes, two in the
top mounting flange and two in the bottom. Also notice
that the power panel has two sets of mounting holes.
One set positions the panel for top entry of cables and
one set for bottom entry. This will be covered in more
detail in Section 4.4
Transfer switch equipment is assembled and supplied
as standard for top entry, although equally adaptable to
bottom entry. Cable entry holes are not part of the
enclosure when shipped from the factory and must be
provided in the field, either before or after mounting the
enclosure.
!
EXTREME CARE SHOULD BE TAKEN TO PROTECT
THE TRANSFER SWITCH FROM DRILL CHIPS, FIL-
INGS AND OTHER CONTAMINANTS WHEN MAKING
THE CABLE ENTRY HOLES AND MOUNTING THE
ENCLOSURE TO PREVENT COMPONENT DAMAGE
OR A FUTURE MALFUNCTION.
I.B. ATS-AG03
CAUTION
CAUTION
Effective 7/00
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