System Connectors - Briggs & Stratton Fortress Installation And Operation Manual

System Connectors

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.
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. Use #14 AWG [2.5 mm
volt wire.
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
2
18AWG [1 mm ] twisted pair wire.
• For power output connection (Line 1, Line 2, Neutral, and Ground), refer to the following table:
• Reference NEC 2014 table 310.15 (B) (16) • Use National Electric Code for correction factors and wire size calculations
• For transfer switch communication use #18 AWG [1 mm
volt 90°C 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].
20
N
]
L1
L2
E
D
2
] minimum 300
E
F
G
H
17 kW
≥ 300V, 75°C 4AWG [21 mm
3AWG [27 mm
• Metric system rounded for simplicity.
2
] twisted pair conductors, no greater than 200 ft in length, 300
H
G
F
– +LED and GND Connection — Not required for
wireless monitor included with unit. Available for
optional hardwired remote system status panel
accessory, #6154.
- Eight Pin Terminal Block — Used to connect
signal wires to the control board. Connect only
one wire per terminal.
- Power Connection (Line 1 and Line 2) —
Power connection to transfer switch.
- Ground Connection — Connect to transfer
switch ground
- Neutral Connection — Connect to transfer
switch neutral
20 kW
2 2
] Cu 4AWG [21 mm ] Cu
2 2
] Al 2AWG [34 mm ] Al
25
26
A
]
1
2
B
3
]
4
C
5
]
6
D
7
8