1
2
3
4
5
DESIGNATED CIRCUITS
TRANSFER
SWITCH
50 AMP
120/240 VOLT
50A POWERCORD
12 KW
GENERATOR
50 AMP
240 VOLT
TRANSFER
SWITCH
30 AMP
120 VOLT
INVERTER
3000 W
MAX
30
1
2
3
4
5
6
7
8
50
50
INSTALLATION BETWEEN POWERCORD AND GENERATOR
(CONFIGURATION A)
The ITS-50R is designed with an easy-to wire bridge. Refer to
Diagram 1 for wiring lug designations. Connect the powercord neu-
tral to the powercord lug labeled NEUTRAL WHT. Connect
powercord hot 1 and hot 2 to powercord lugs HOT 1 BLK and HOT
2 RED. Connect the generator neutral(s) to generator lug labeled
NEUTRAL WHT. Connect generator hot 1 and hot 2 to generator
lugs HOT 1 BLK and HOT 2 RED. Connect output to panel or other
destination to the applicable “panel” lugs. The bypass switch should
be in the “off” position (marked “1”).
INSTALLATION BETWEEN INVERTER AND ALTERNATING
SOURCE (CONFIGURATION B)
For installation between an inverter (default) and another power
supply (dominant), such as the output from a prior powercord/
generator transfer switch, connect the inverter neutral to “powercord’
lug labeled NEUTRAL WHT, and connect the inverter hot to
“powercord” lugs labeled HOT 1 BLK and HOT 2 RED. Connect the
alternate power supply neutral to “generator” lug NEUTRAL WHT.
Connect alternate power supply hot 1 and hot 2 to “generator” lugs
HOT 1 BLK and HOT 2 RED. Connect the output to applicable
“panel” lugs. These connections will allow any other supply to domi-
nate the inverter, and the inverter output will pass through the
normally closed contacts of the switch. This allows the inverter to
operate only in the absence of the other power supplies, which is
ideal for inverters. Set the timer delay bypass switch of the in-
verter/alternate source transfer switch to the ON position.
INSTALLATION IN HYBRID SYSTEM WITH ITS-30R FOR DES-
IGNATED CIRCUITS (CONFIGURATION C)
Install the ITS-50R on the line side of the main distribution panel as
illustrated in Configuration A. The ITS-30R can be installed between
inverter (default) and a circuit panel supplied by the larger amp
alternating power supply (dominant). Connect the inverter to termi-
nals 7 and 8, and connect the 30 amp branch circuit to 5 and 6.
Connect the designated circuit panel to the output terminals. The
inverter will only supply the load in the absence of the 50 amp
power supply, in which case, only the load designated to the 30
amp branch circuit is supplied. The timer delay bypass switch on
the ITS-30R should be in the ON position.
MAIN
TRANSFER
SWITCH
50 AMP
240 VOLT
50A POWERCORD
12 KW
GENERATOR
50 AMP
120/240 VOLT
TRANSFER
SWITCH
50 AMP
240 VOLT
INVERTER
6000 W
MAX
1
2
3
4
5
6
7
8
50
50
BRANCH CIRCUITS
MAIN
TRANSFER
SWITCH
50 AMP
240 VAC
50A POWERCORD
12 KW
GENERATOR
50 AMP
120/240 VAC
1
2
3
4
5
6
7
8
50
50
BRANCH CIRCUITS
MAIN
TYPICAL INSTALLATION
CONFIGURATIONS
A
50 AMP SYSTEM
POWERCORD/
GENERATOR
B
C
50 AMP SYSTEM
POWERCORD
GENERATOR
INVERTER
DIAGRAM 1.
BRIDGE WIRING
DESIGNATIONS
50 AMP
HYBRID SYSTEM:
50A 240V SWITCH
POWERCORD
GENERATOR
30A 120V SWITCH
INVERTER
(Switching designated
circuits to sub-panel)
