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Instruction Bulletin
Page 20
Effective: June 2003
4.6 Wiring
POWER CONDUCTORS AND CONTROL WIRING MAY
HAVE VOLTAGE PRESENT THAT CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. DE-ENERGIZE ALL POWER
OR CONTROL CIRCUIT CONDUCTORS BEFORE BEGIN-
NING TO PERFORM ANY WIRING ACTIVITY TO OR WITHIN
THE TRANSFER SWITCH EQUIPMENT.
Power sources, load conductors and control wiring should
be connected to locations as indicated in the Customer Wir-
ing diagram supplied with the transfer switch equipment.
DO NOT RUN POWER CABLES BEHIND OR TO THE LEFT
OF THE POWER PANEL. THE CABLES SHOULD BE RUN IN
THE GUTTER SPACE PROVIDED. RUNNING THE CABLES IN
PLACES NOT RECOMMENDED COULD INTERFERE WITH
THE PROPER OPERATION OF THE TRANSFER SWITCH.
CHECK THE TRANSFER SWITCH EQUIPMENT NAMEPLATE
FOR RATED VOLTAGE. IT SHOULD BE THE SAME AS THE
NORMAL AND EMERGENCY LINE VOLTAGES. OPERATING
THE EQUIPMENT ON IMPROPER VOLTAGE CAN CAUSE
EQUIPMENT DAMAGE.
Once the transfer switch equipment has been installed and
wired, perform initial mechanical and electrical procedures
as outlined in Section 6 to verify that the equipment is
installed and operating properly.
NOTICE
Remember to re-attach the solid steel power panel
deadfront shield to the ratchet assembly on the vertical
design after completing any of the procedures described
in this section.
O&M Manual for
Non-Automatic Transfer
Switches (30 – 1200 Amperes)
CAUTION
CAUTION
CAUTION
For more information visit: www.cutler-hammer.eaton.com
4.7 Voltage Selection Adjustments
Certain devices, such as the Voltage Selection Panel,
sensing relays and timers, need to be set and/or calibrated
prior to placing the transfer switch equipment into service.
Adjustments for logic devices are described in Section 3.5.
Voltage selection adjustments are described here.
Figure 17. Line Voltage Plug and Receptacles (Shown with Covers
Removed) for Horizontal Design
BE SURE THAT THE CORRECT VOLTAGE IS SELECTED
TO MATCH THE SYSTEM VOLTAGE. AN IMPROPER
SELECTION AND/OR CONNECTION COULD RESULT IN
EQUIPMENT DAMAGE.
Vertical Design Voltage Selection
The vertical design transfer switch is furnished with a multi-
tap Voltage Selection Panel to the right of the power panel.
Seven front accessible taps from 208 to 600 Vac are provided
(Figure 9). A small disconnect plug is provided to change
from one voltage to another.
Horizontal Design Voltage Selection
Horizontal design transfer switches are furnished with
an adjustable line voltage plug and receptacles below the
power panel. To change the line voltage, remove the covers
and insert the plug in the desired receptacle (Figure 17).
CAUTION
IB01602007E
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