Section 2 — Installation
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 #
1.4TRANSFER 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.
1.5SAFE 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
2.1INTRODUCTION 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.
2.2UNPACKING
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.
GTS “HS” Type Transfer Switch
2.3MOUNTING
Mounting dimensions for the transfer switch enclo- sure are in this manual. Enclosures are typically
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.
2.4CONNECTING 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.
NOTE:
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.
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