GE Industrial Solutions ZTX Series - Manual (Page 4)

■ ■ 2 GE Zenith Controls ■ ■
ZTX Operation and Maintenance Manual (72R-1000)
GENERATOR
TERMINALS
N
BR
UTILITY
TERMINALS
LOAD
TERMINALS
T1 T2 T3
N1 N3
E1 E3 E2
N2
T = Load N = Utility E = Generator
OPTIONAL A4 CONTACT TION
OPERATES WHEN IN ERAT
UTILITY POSITION ILITY
OPTIONAL A3 CONTACT TION
OPERATES WHEN IN ERAT
GENERATOR POSITION NERA
SWITCH
POSITION
INDICATOR
JP
Install
load
cables
first.
Tip!
Table 1
Screw Type Terminals for External Power Connections
Switch Size
(Amps)
40
80
100
150
Utility, Generator and Load Terminals
1 #8 to 3/0 AWG
Cable Per Pole Range of Wire Sizes
1 #8 to 3/0 AWG
1 #8 to 3/0 AWG
1 #8 to 3/0 AWG
Fully Rated Neutral Bar (When Required)
3 #8 to 1/0 AWG
No. of Cables Range of Wire Sizes
3 #8 to 1/0 AWG
3 #8 to 1/0 AWG
3 #8 AWG to 300 MCM
200, 225, 250*
300, 400
1 #6 AWG to 250 MCM
1 #4 AWG to 600 MCM
3 #6 AWG to 300 MCM
3 #4 AWG to 300 MCM
* IEC Rating Only
Installation
(cont’d)
Figure 1 - Power Panel
Power Connections
GE Zenith transfer switches are supplied with UL listed
solderless screw type terminals as standard for the
Normal, Emergency and Load power connections.
Table 1 lists the number and sizes of cable lugs supplied
as standard for each switch amp rating.
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.
Connect the Normal, Emergency, 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.