Generac 004678-2 Connecting Start Circuit Wires, Functional Tests Adjustments, Manual Operation

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Section 3 — Operation

Generac GTS “HS” Type Transfer Switch

Connect power source load conductors to clearly marked transfer mechanism terminal lugs as follows

1.Connect UTILITY (NORMAL) power source cables to switch terminals N1, N2.

2.Connect EMERGENCY (STANDBY) source power cables to transfer switch terminals E1, E2.

3.Connect customer LOAD leads to switch termi- nals T1, T2.

Conductors must be properly supported, of approved insulative qualities, protected by approved conduit, and of the correct wire gauge size in accordance with applicable codes.

Be sure to maintain proper electrical clearance between live metal parts and grounded metal. Allow at least 1/2 inch for 100-400 amp circuits.

2.5CONNECTING START CIRCUIT

WIRES

Control system interconnections (Section 6) consist of UTILITY 1 and 2, LOAD 1 and 2, and leads 23 and

194.Control system interconnection leads must be run in a conduit that is separate from the AC power lead. Recommended wire gauge sizes for this wiring depends on the length of the wire, as recommended below:

 

MAXIMUM WIRE LENGTH

RECOMMENDED WIRE

 

 

 

SIZE

 

 

460 feet (140m)

No. 18 AWG.

 

 

461 to 730 feet (223m)

No. 16 AWG.

 

 

731 to 1,160 feet (354m)

No. 14 AWG.

 

 

1,161 to 1,850 feet (565m)

No. 12 AWG.

 

 

 

 

 

NOTE:

When this ATS is used with an air-cooled genera- tor, the LOAD 1 and LOAD 2 wires are not used.

3.1FUNCTIONAL TESTS AND

ADJUSTMENTS

Following transfer switch installation and inter- connection, inspect the entire installation careful- ly. A competent, qualified electrician should inspect it. The installation should comply strictly with all applicable codes, standards, and regula- tions. When absolutely certain the installation is proper and correct, complete a functional test of the system.

Perform functional tests in the exact order

!presented in this manual, or damage could be done to the switch.

4 Generac® Power Systems, Inc.

IMPORTANT: Before proceeding with functional tests, read and make sure all instructions and infor- mation in this section are understood. Also read the information and instructions of labels and decals affixed to the switch. Note any options or accessories that might be installed and review their operation.

3.2MANUAL OPERATION

DANGER

Do NOT manually transfer under load.

!Disconnect transfer switch from all power sources by approved means, such as a main circuit breaker(s).

A manual HANDLE is shipped with the transfer switch. Manual operation must be checked BEFORE the transfer switch is operated electrically. To check manual operation, proceed as follows:

1.Turn the generator’s AUTO-OFF-MANUAL switch to OFF.

2.Turn OFF both UTILITY and EMERGENCY power supplies to the transfer switch, with what- ever means provided (such as the main line cir- cuit breakers).

3.Note position of transfer mechanism main con- tacts by observing the moveable contact carrier arm.

Manual operation handle towards the top of switch mechanism - LOAD terminals (T1, T2) are connected to UTILITY terminals (N1, N2).

Manual operation handle towards the bottom of switch mechanism - LOAD terminals (T1, T2) are connected to EMERGENCY terminals (E1, E2).

Do not use excessive force when operating

!the transfer switch manually or damage could be done to the manual handle.

3.2.1 CLOSE TO NORMAL SOURCE SIDE

Before proceeding, verify the position of the switch by observing the position of manual operation handle in Figure 3.1. If the handle is UP, the contacts are closed in the NORMAL position, no further action is required. If the handle is DOWN, proceed with Step 1.

Step 1: With the handle inserted into the actuating shaft, move handle UP. Be sure to hold on to the handle as it will move quickly after the center of travel.

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Contents Power SYSTEMS, INC General Hazards Table of Contents Safe USE of Transfer Switch Transfer Switch Data DecalTransfer Switch Enclosure IntroductionInstallation Introduction to InstallationConnecting Power Source and Load Lines UnpackingManual Operation Connecting Start Circuit WiresFunctional Tests Adjustments OperationVoltage Checks Close to Emergency Source SideGenerator Tests Under Load Do not OverloadGenerac GTS HS Type Transfer Switch Generac GTS HS Type Transfer Switch Generac GTS HS Type Transfer Switch Installation Diagram Electrical Data Utility SupplyATS ATS Views and Parts List Maximum VoltsExploded Views and Parts List QTY Description34 35 LUG Sldlss 250-#6 AL/CU Warranty ALL Components *PARTS only