Ge ZTGD Series Transfer Switches 40-3000 Amps User Manual download pdf (Page 4)

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4 GE Zenith Controls

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ZTG/ZTGD Operation and Maintenance Manual (70R-1000D)

Table 2

Tightening Torque for Lugs

Socket Size

Across Flats

Torque

Lb. - In.

Lb. - Ft.

1/8

100

5/32

120

3/16

150

7/32

200

1/4

275

5/16

375

3/8

500

1/2

600

9/16

Installation (cont’d)

CABINET

LIFTING EYES

SPREADER BAR

45°

Figure 1

Power Connections

GE Zenith transfer switches are supplied with UL listed

solderless screw type terminals as standard for the

Source 1, Source 2 and Load power connections.

Table 1 lists the number and sizes of cable lugs supplied

as standard for each switch amp rating.

Connect the Source 1, Source 2, and Load conductors

to the clearly marked terminals on the transfer switch.

Remove surface oxides from cables by cleaning with a

wire brush. Verify that all connections are correct before

tightening the lugs. All cable lug connections must be

tightened to the proper torque values as shown in

Table 2.

NOTE

: Do not run cables or wiring behind

front-connected transfer switches.

DANGER

HAZARDOUS VOLTAGE

(Can Cause Severe Injury or Death)

Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.

Table 1

Power Connections: Screw Type Terminals for External Power Connections

Switch Size

(Amps)

100

150

200, 225

400

600

800, 1000, 1200

Source 1, Source 2 & Load Terminals

1 #8 to 3/0 AWG

Cable Per Pole Range of Wire Sizes

1 #8 to 3/0 AWG

1 #6 AWG to 250 MCM

1 #4 AWG to 600 MCM

2 #2 AWG to 600 MCM

4 #2 AWG to 600 MCM

Neutral Bar (When Required)

3 #14 to 1/0 AWG

No. of Cables Range of Wire Sizes

3 #14 to 1/0 AWG

3 #6 AWG to 350 MCM

4 #4 AWG to 600 MCM

260

1 #6 AWG to 350 MCM 3 #6 AWG to 350 MCM

8 #4 AWG to 600 MCM

12 #4 AWG to 600 MCM

1600, 2000

2600, 3000

8 #2 AWG to 600 MCM

#4 AWG to 600 MCM

Engine Start

Control Connections

Engine-start control wires connect to control terminals

beside the MX150. Engine start terminals are indicated by

a schematic symbol (the symbol indicates the contact

state for a de-energized normal source). Figure 3 shows

the engine-start contacts.

Make all other necessary control connections to the con-

trol panel terminal blocks per the schematics supplied

with the ATS.

NOTE: All control wires (18-12 AWG) must be

torqued to 19 in/lbs.

NOTE

: When lifting the switch using a spreader bar,

height H must be equal to half of distance D.

1 2 3 4 5 6 7 8 9 ... 35 36

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Ge ZTGD Series Transfer Switches 40-3000 Amps User Manual Page 4

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