Section 6: Electrical Connections; Generator Connections; Control Wiring - Generac Power Systems rtg16eza1 Owner's Manual

Section 6: Electrical Connections

Generator Connections

NOTE: Control wiring may be already wired on pre-wired
generators. If so, tighten the 5 foot (1.5 meter) whip
conduit inside of the enclosure. If not, wiring must be in
accordance with local jurisdiction and codes.
Remove the appropriate main AC/control wiring
1.
knock-out plug from the back of the generator.
Install the conduit and main AC and control wires
2.
between the generator and the transfer switch. See
Figure 2-6 for knockout locations (verify specific
transfer switch wiring/connections per model).
NOTE: These wiring connections may be present on
pre-wired models.

Control Wiring

N1
A
UTILITY
SENSE
A
N2
UTILITY
T1
B
VAC LOAD
SUPPLY
209
F
COMMOM
ALARM
210
F
COMMON
ALARM
0
C
DC COMMON
D 194
+12 VDC
E
23
TRANSFER
1-115 ft (1-35 m)
116-185 ft (36-56 m)
186-295 ft (57-89 m)
296-460 ft (90-140 m)
Installation Guidelines For 60 Hz Air-cooled Generators
1
3
2
000914
Figure 6-1. Control Wiring Connections
Table 6-3. Control Wire Recommended Length and Size
Maximum Wire Length
NOTE: This wiring can be run in the same conduit if the
appropriate insulation rated wire is used, or if the
provided sleeve is used to separate the high and low
voltage control wires.
Seal the conduit at the generator and in
3.
compliance with any codes.
Strip the insulation from the ends of the wires. Do
4.
not remove excessive insulation.
To connect the control wires, push down on the
5.
spring loaded connection point with a flat head
screwdriver, insert wire and release.
NOTE: No wire insulation should be in the connection
point, only bare wire.
Table 6-1. Control Panel Connections
Terminal Numbering
Wire Numbers
Decal
N1 & N2 - 240 VAC - Sensing for Utility Dropout and
A YELLOW #1 & #2
Pickup
B* BLUE #3 T1 - Fused 120 VAC for Battery Charger (*see NOTE)
C BLACK #3 0 - DC (-) Common Ground Wire
D RED #4 194 - DC (+) 12 VDC for Transfer Controls
E WHITE #5 23 - Transfer Control Signal Wire
F BLUE #1 & #2 Optional Alarm Relay Contacts (Normally Open)
Note: Must be connected to keep battery charged whether unit is running or not.
Table 6-2. Ground and Neutral Connections
1 Large Neutral Lug Torque Spec 2/0 TO 14 AWG 120 in-lb (13.56 N-m)
2 Large Ground Lug Torque Spec 2/0 TO 14 AWG 120 in-lb (13.56 N-m)
Ground and Neutral Bus Bar Torque Specs:
4-6 AWG 35 in-lb (3.95 N-m)
3
8 AWG 25 in-lb (2.82 N-m)
10-14 AWG 20 in-lb (2.26 N-m)
Recommended Wire Size
No. 18 AWG
No. 16 AWG
No. 14 AWG
No. 12 AWG
Section 6: Electrical Connections
23