Connections; Setting Priorities - Generac Power Systems 006873 Owners & Installation Manual

Section 3: Installation, Tests and Troubleshooting
H1
Figure 3-2. Mounting Dimensions
Height (in/mm)
Width (in/mm)
Depth (in/mm)

Connections

H
G
I
A
B
J
E
F
Figure 3-3. Wiring Diagram
Legend
A Red (240 VAC - Line)
B Black (240 VAC - Line)
C Red (240 VAC - Load)
D Black (240 VAC - Load)
E White - Neutral (as required)
F Green - Ground (as required)
G Black - Factory (PCB)
H Red - Factory (PCB)
I Blue - Factory (PCB)
J Blue - Factory (Jumper)
8
W1
W2
H2
D1
000107
H1 6.17/156.8
H2 2.36/60
W1 7.06/179.4
W2 4.72/120
D1 3.7/94
C
D
000108
DANGER
Electrocution. Turn utility and emergency
power supplies to OFF before connecting
power source and load lines. Failure to do so
will result in death or serious injury.
Turn OFF both
1.
EMERGENCY (STANDBY) power supplies before
connecting power source and load lines to transfer
switch and SMM.
NOTE: Suitable conduit fittings must be installed in
knockout openings when running supply and load wires.
NOTE: Use at least 75 ºC
per installation instructions.
recommended wire size based on load current.
Temperature rating of conductor: 75 ºC (167 ºF)
Conductor types (must be copper): RHW, THHW, THW,
THWN, XHHW, USE, ZW
Size AWG
14
12
10
8
* 40A for Type NM cable
Run line supply wires per applicable NEC code
2.
articles for wiring method selected.
Run load wires per applicable NEC code articles
3.
for wiring method selected.
Connect line supply wiring to line side of SMM
4.
contactor field terminals. See
field terminals to 25 in-lbs (2.8 Nm).
Connect load supply wiring to load side of SMM
5.
contactor field terminals. See
NOTE: If neutral and ground wires are included, connect
inside SMM using a listed termination device.
The unit is now ready to configure, apply power, and
perform testing.

Setting Priorities

High priority 240 VAC loads should be set to the highest
priorities so those loads recover first, in the event of
generator overload.
NOTE: The highest priority, and first load to activate is
Priority 1. The last load to activate is Priority 8.
Setting priority determines timing for 3 scenarios:
•
Order in which loads recover
•
Delay time until power returns during an outage
•
Delay time for post load shed recovery
Owner's/Installation Manual for SMM
(000116)
UTILITY (NORMAL)
rated wire and gauge
(167 ºF)
Refer to table
Maximum Current Rating
15A
20A
30A
50A*
Figure 3-2. Tighten
Figure 3-2.
and
for