GE ZTX manual Installation cont’d, Power Connections, Danger, Hazardous Voltage, Switch Size

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 front-connected transfer switches.

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 (72R-1000) GE Zenith Controls ■