Section 2 — Installation
Generac GTS “W” Type Transfer Switch
2.1INTRODUCTION TO INSTALLATION
This equipment has been wired and tested at the fac- tory. Installing the switch includes the following pro- cedures:
•Mounting the enclosure.
•Connecting utility and generator power source leads.
•Connecting the load leads.
•Connecting the generator sensing leads.
•Connecting any auxiliary contact (if needed)
•Installing/connecting any options and accessories.
•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.
2.3MOUNTING
Mounting dimensions for the transfer switch enclo- sure are in this manual. Enclosures are typically
Handle transfer switches carefully when
!installing. Do not drop the switch. Protect the switch against impact at all times, and against construction grit and metal chips. Never install a transfer switch that has been damaged.
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.
2.4.1 2-POLE MECHANISM
These switches (Figure 2.1) are used with a single phase system, when the single phase NEUTRAL line is to be connected to a Neutral Lug and is not to be switched.
Figure 2.1 — Typical 2-Pole Transfer Mechanism
(200 Amp Shown)
◆2.4.2 3-POLE MECHANISM
These switches (Figure 2.2) are used with a three phase system, when the three phase NEUTRAL line is to be connected to a NEUTRAL lug and is not to be switched. It is also used with a single phase system when the neutral is to be switched (NEUTRAL to be connected to third pole).
Figure 2.2 — Typical 3-Pole Transfer Mechanism
(200 Amp Shown)
2.4CONNECTING POWER SOURCE
AND LOAD LINES
DANGER
Make sure to turn OFF both the UTILITY (Normal) and EMERGENCY (Standby genera- tor) 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 volt- age power supply lines causes extremely haz- ardous, possibly lethal, electrical shock.
Wiring diagrams and electrical schematics are pro- vided in this manual. Power source and load connec- tions are made at a transfer mechanism, inside the switch enclosure.
Generac® Power Systems, Inc. 3
