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When requesting information or ordering parts for this
equipment, make sure to include all information from
the DATA DECAL.
Record the Model and Serial numbers in the space
provided below for future reference.
MODEL #
SERIAL #
1.4
TRANSFER SWITCH ENCLOSURE
The standard switch enclosure is a National
Electrical Manufacturer's Association (NEMA) 3R
type. NEMA 3R type enclosures primarily provide
a degree of protection against falling rain and sleet
and is undamaged by the formation of ice on the
enclosure.
1.5
SAFE USE OF TRANSFER SWITCH
Before installing, operating or servicing this equip-
ment, read the SAFETY RULES (inside front cover)
carefully. Comply strictly with all SAFETY RULES to
prevent accidents and/or damage to the equipment.
The manufacturer recommends that a copy of the
SAFETY RULES are posted near the transfer switch.
Also, be sure to read all instructions and information
found on tags, labels and decals affixed to the equip-
ment.
Two publications that outline the safe use of transfer
switches are the following:
• NFPA 70; National Electrical Code
• UL 1008, STANDARD FOR SAFETY-AUTOMATIC
TRANSFER SWITCHES
2.1
INTRODUCTION TO INSTALLATION
This equipment has been wired and tested at the
factory. Installing the switch includes the following
procedures:
• Mounting the enclosure.
• Connecting power source and load leads.
• Connecting the generator sensing and transfer
relay circuits.
• Connecting any auxiliary contact (if needed)
• Testing functions.
2.2
UNPACKING
Carefully unpack the transfer switch. Inspect closely
for any damage that might have occurred during ship-
ment. The purchaser must file with the carrier any
claims for loss or damage incurred while in transit.
Check that all packing material is completely removed
from the switch prior to installation.
Section 2 — Installation
GTS "HS" Type Transfer Switch
2.3
MOUNTING
Mounting dimensions for the transfer switch enclo-
sure are in this manual. Enclosures are typically
wall-mounted. See "Installation Diagram", Section 5.
Handle transfer switches carefully when install-
ing. Do not drop the switch. Protect the switch
against impact at all times, and against construc-
tion grit and metal chips. Never install a transfer
switch that has been damaged.
This transfer switch is mounted in a NEMA 3R enclo-
sure. It can be mounted outside or inside and should
be based on the layout of installation, convenience
and proximity to the utility supply and load center.
Install the transfer switch as close as possible to the
electrical loads that are to be connected to it. Mount
the switch vertically to a rigid supporting structure.
To prevent switch distortion, level all mounting
points. If necessary, use washers behind mounting
holes to level the unit.
2.4
CONNECTING POWER SOURCE
AND LOAD LINES
DANGER
Make sure to turn OFF both the UTILITY
(NORMAL) and EMERGENCY ( STANDBY) power
supplies before trying to connect power source
and load lines to the transfer switch. Supply
voltages are extremely high and dangerous.
Contact with such high voltage power sup-
ply lines causes extremely hazardous, possibly
lethal, electrical shock.
Wiring diagrams and electrical schematics are pro-
vided in this manual.
Two suggested installation methods are shown. One
for new installations and/or retrofit and one for ret-
rofit.
All installations must comply with national, state
and local codes. It is the responsibility of the
installer to perform an installation that will pass
the final electrical inspection.
The utility supply connection is made at the circuit
breaker terminals. The generator supply and custom-
er load connections are made at the transfer switch
mechanism, inside the switch enclosure.
NOTE:
3
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