GE Industrial Solutions ZTSH SERIES 30-4000 AMPS - Manual (Page 6)

Control Connections
A complete information package is furnished with each
transfer switch including a complete connection diagram
and schematic which details all necessary control circuit
field connections.
The engine start control wires connect to the terminals
specified in the upper left corner of the control panel.
Figure 2 shows the location of these terminals on the stan-
dard SSRCP printed circuit board mounted on the steel
backplate. These terminals are clearly identified by a pre-
printed label attached to the steel control panel. In the
case of manual transfer switches, or in other applications
not requiring the standard control panel, clearly marked
terminal blocks are provided in the upper left corner of
the control panel for the engine start control wires.
Terminals for field connections to the A3 Emergency auxil-
iary contacts and the A4 Normal auxiliary contacts are also
provided. These terminals are clearly marked and appear on
the side of the power panel. On 400 amp units these terminals
appear on the disconnect switch bracket above the operator
handle, and are marked as illustrated in Figure 3.
Figure 2
ENGINE
A3-2
■ ■ 4 Zenith Controls, Inc. ■ ■ ZTSH Operation and Maintenance Manual (43R-1000)
Installation
(cont’d)
Figure 3
Table 1
Screw Type Terminals for External Power Connections
Switch Size
(Amps)
40
80
100
150
225
260
400
600
800
Normal, Emergency & Load Terminals
1 #8 to 2 AWG
Cable Per Pole Range of Wire Sizes
1000
1200
1600
2000
3000
4000
1 #8 to 1/0 AWG
1 #8 to 1/0 AWG
1 #8 to 3/0 AWG
1 #6 AWG to 250 MCM
1 #6 AWG to 350 MCM
1 #4 AWG to 600 MCM
2 #2 AWG to 600 MCM
4 #2 AWG to 600 MCM
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 #6 AWG to 300 MCM
3 #6 AWG to 300 MCM
3 #6 AWG to 300 MCM
4 #2 AWG to 600 MCM
8 #2 AWG to 600 MCM
12 #2 AWG to 600 MCM
4 #2 AWG to 600 MCM 12 #2 AWG to 600 MCM
4 #2 AWG to 600 MCM 12 #2 AWG to 600 MCM
Line and load terminals are located
in rear and arranged for bus bar
connection.
12
12
12
12 3/0 AWG to 750 MCM
3/0 AWG to 750 MCM
3/0 AWG to 750 MCM
3/0 AWG to 750 MCM