GE 70R-1000D manual Installation cont’d, Power Connections, Engine Start Control Connections

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 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.

H

SPREADER BAR

45°

LIFTING EYES

NOTE: Do not run cables or wiring behind front-connected transfer switches.

CABINETD

Figure 1

NOTE: When lifting the switch using a spreader bar, height H must be equal to half of distance D.

Power Connections: Screw Type Terminals for External Power Connections

Switch Size	Source 1, Source 2 & Load Terminals		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	#14 to 1/0 AWG
80	1	#8 to 3/0 AWG	3	#14 to 1/0 AWG
100	1	#8 to 3/0 AWG	3	#14 to 1/0 AWG
150	1	#8 to 3/0 AWG	3	#6 AWG to 350 MCM
200, 225	1	#6 AWG to 250 MCM	3	#6 AWG to 350 MCM
260	1	#6 AWG to 350 MCM	3	#6 AWG to 350 MCM
400	1	#4 AWG to 600 MCM	4	#4 AWG to 600 MCM
600	2	#2 AWG to 600 MCM	8	#4 AWG to 600 MCM
800, 1000, 1200	4	#2 AWG to 600 MCM	12	#4 AWG to 600 MCM
1600, 2000	8	#2 AWG to 600 MCM	24	#4 AWG to 600 MCM
2600, 3000

Table 1

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.

Tightening Torque for Lugs

Socket Size		Torque
Across Flats	Lb. - In.		Lb. - Ft.
1/8	45		4
5/32	100		8
3/16	120		10
7/32	150		12
1/4	200		17
5/16	275		23
3/8	375		31
1/2	500		42
9/16	600		50

Table 2

■ 4 ZTG/ZTGD Operation and Maintenance Manual (70R-1000D) GE Zenith Controls ■