Installation (cont’d)
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.
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.
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
Screw Type Terminals for External Power Connections
Switch Size | Utility, Generator and Load Terminals | Fully Rated Neutral Bar (When Required) | |||
(Amps) |
|
|
|
| |
Cable Per Pole | Range of Wire Sizes | No. of Cables | Range of Wire Sizes | ||
| |||||
40 | 1 | #8 to 3/0 AWG | 3 | #8 to 1/0 AWG | |
80 | 1 | #8 to 3/0 AWG | 3 | #8 to 1/0 AWG | |
100 | 1 | #8 to 3/0 AWG | 3 | #8 to 1/0 AWG | |
150 | 1 | #8 to 3/0 AWG | 3 | #8 AWG to 300 MCM | |
200, 225, 250* | 1 | #6 AWG to 250 MCM | 3 | #6 AWG to 300 MCM | |
300, 400 | 1 | #4 AWG to 600 MCM | 3 | #4 AWG to 300 MCM | |
Table 1
* IEC Rating Only
UTILITY
LOAD
TERMINALS
T1 T2 T3
Tip!
TERMINALS
N1 N2 N3
| BR |
SWITCH | N |
POSITION | |
INDICATOR |
|
E1 E2 E3
GENERATOR
TERMINALS
T = Load N = Utility E = Generator
Figure 1 - Power Panel
OPTIONAL A4 CONTACT
OPERATES WHEN IN UTILITY POSITION
JP
OPTIONAL A3 CONTACT
OPERATES WHEN IN GENERATOR POSITION
Install
load
cables
first.
■ 2 | ZTX Operation and Maintenance Manual | GE Zenith Controls ■ |
