25
Low Voltage connections to signal fault contacts, transfer switch communication and auxiliary 12VDC power are made via a
field connection terminal block in control board area. Compare this illustration with your generator to familiarize yourself with
the location of these connections.
system connectors
a
- two Pin terminal Block
— Used to connect utility
240 VAC from fuse block in ATS to the control board.
Connect only one wire per terminal.
B
- fault contacts
— Use NO, COM and NC to hook up a
siren, light, etc. to alert you in case of a fault. Contacts
reverse state (NO goes to NC and vice versa) upon a
fault condition.
c
– transfer switch communication (txrx and txrx
GnD)
—
Connect to transfer switch control board for
communication interface using 18AWG twisted pair
wire.
D
– +LeD and GnD connection
—
Not required for wireless
monitor included with unit. Available for optional
hardwired remote system status panel accessory,
#6154.
e
- eight Pin terminal Block
— Used to connect signal
wires to the control board. Connect only one wire per
terminal.
f
- Power connection (Line 1 and Line 2)
— Power
connection to transfer switch.
G
- neutral and Ground connection
— Connect to transfer
switch neutral and ground
• For power output connection (Line 1, Line 2, Neutral, and Ground), refer to the following table:
Power output connections
minimum 300V, 75°c
15 kW
17 kW
20 kW
6AWG Copper
4AWG Copper
4AWG Copper
4AWG Aluminum
3AWG Aluminum
2AWG Aluminum
• Reference NEC 2011 table 310.15 (B) (16) • Use National Electric Code for correction factors and wire size calculations.
• For utility circuit connection (Utility A and Utility B) use #14 AWG minimum 300 volt wire.
• For transfer switch communication use #18 AWG twisted pair conductors, no greater than 200 ft in length, 300 volt wire.
• When connecting to the terminal block, fasten only one wire to each connector screw.
• Torque terminal block screws to 4.4 in-lb (0.49 Newton meter).
• Torque circuit breaker connections to 45 in-lb (5 Newton meter).
UTILITY A
UTILITY B
NO
COMM
NC
TxRx
TxRx GND
+LED
GND
N/C
LINE 1
LINE 2
GROUND
NEUTRAL
]
]
]
]
]
A
B
c
e
]
]
]
f
G
]
D
]
NOT
for
REPRODUCTION
Summary of Contents for 20 kW Home
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