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INSTALLATION (continued)
1 --- 2
Controller Ground
A grounding wire must be connected to the controller’s
lower left mounting stud. Because the controller is
mounted on the enclosure door, a conductive strap must
be used between the enclosure and the door. This
connection provides proper grounding which does not
rely upon the door hinges.
Harnesses
The transfer switch is connected to the left side of the
control pa n el by a plug-in harness (two plugs).
Auxiliary Circuits
Connect auxiliary circuit wires to appropriate terminals
on the transfer switch. Note the control features that are
furnished on this switch. Make the necessary auxiliary
connections by referring to the Wiring Diagram.
Engine Starting Contacts
The engine control contact connections (if used) are
located on the transfer switch. Connect signal wires to
appropriate terminals as specified in Table B and shown
in Figures 1–1 and 1–2. See the wiring diagram too.
Table B. Engine start connections
When normal
source fails
Terminals on
transfer switch
contact closes TB1 and TB2
contact opens TB1 and TB3
COMMON
FEATURE 7
closes to start
FEATURE 8
openstostart
COMMON
FEATURE 14B
closedonemergency
FEATURE 14A
closedonnormal
COMMON
FEATURE 14BA
closedonemergency
FEATURE 14AA
closedonnormal
Engine Starting
Signals
5amps,32VDC
5ampsresistive28VDC
or120 VAC max.
TS Auxiliary Contacts
Feature 14A & 14B
10 amps,32 VDC
10 amps250 VAC
general purpose
Optional
TS Auxiliary Contacts
Feature 14AA & 14BA
10 amps,32 VDC
10 amps250 VAC
general purpose
left side of transfer switch
Figure 1-1. Connections to engine starting contact
terminal block for 150 through 1200 amp.
J & H–design transfer switches.
TB Terminal Block
(field connections)
accepts wire range
22–12 AWG
Engine Starting
Signals
5amps,32VDC
5ampsresistive28VDC
or120 VAC max.
TS Auxiliary Contacts
Feature 14A & 14B
10 amps,32 VDC
10 amps250 VAC
general purpose
FEATURE 7
closes to start
FEATURE 8
opens to start
Figure 1-2. Connections to engine starting contact
terminal block located on 1600 through 3000 amp.
G–design transfer switches.