Generac Power Systems Guardian Series Installation Manual page 8

12 Install Automatic Transfer Switch
12. MOUNTING OF AUTOMATIC TRANSFER SWITCH
Locate automatic transfer switch with built-in emergency load
center within one foot of main distribution panel. The automatic
transfer switch with built-in load center can be located to the
left or right of main distribution panel. Hold transfer switch
against the mounting surface. Level the transfer switch and
mark the mounting holes. Drill the appropriate size pilot holes.
Mount automatic transfer switch with built-in load center to
mounting surface with appropriate fasteners.
DANGER: Although you may choose to perform
electrical connections yourself, Generac Power
Systems, Inc. recommends that a licensed electrician
or individual with complete knowledge of electricity
perform the procedures in sections 12, (above) 13a, and
13b.
DANGER: Switch service
main circuit breaker to "off"
or open position prior to
removal of cover or removal
of any wiring of the main
electrical distribution panel.
The wires connected to the
service main circuit breaker remain live or "hot". Avoid
contact with these wires and the service main circuit
breaker connection lugs.
NOTE: Balance must be maintained when moving
circuit locations from main electrical distribution panel
to emergency load center. Circuit breaker positions
alternate buss bars vertically. Circuits sharing a neutral
wire should either be moved together to adjacent
positions in emergency load center or not moved. If
you are unsure of proper procedure or if your
installation differs from that described in this guide,
consult a licensed professional at this time.
7
1ft.
13a Connection of Emergency Circuits
13a. CONNECTION OF EMERGENCY CIRCUITS
Remove the main electrical distribution panel cover. Remove
appropriate size knockout from the bottom or side of the main
panel. (A 2-foot flexible conduit is pre-wired from the transfer
switch with built-in load center.) Remove threaded lock nut
from conduit coupling. Feed all wires through knockout into
main panel. Slip lock nut over wires and tighten securely on
conduit coupling. Remove the black (hot) wire from a circuit
breaker that protects a circuit you want to have powered in the
event of a power failure.
13a Connection of Emergency Circuits
Note: Circuits to be moved must be protected by same
size breaker. For example, a 15 amp circuit in main
panel must be 15 amp circuit in transfer switch.
Wire nut the black wire to the matching circuit lead wire from
the emergency circuit breaker from load center in the transfer
switch. (All circuit wires are color coded and labeled for easy
identification). Repeat this process with remaining circuits to
be powered by the generator. White wires (neutral) in your main
distribution panel should remain connected to neutral bar. It is
not necessary to move them. The emergency load center in the
transfer switch supplies the following circuits: Model 4389 (5)
15A 120V, (1) 20A 120V and (1) 30A 240V. Model 4456 (3)
15A 120V, (3) 20A 120V, (1) 20A 240V & (1) 30A 240V. Model
4390 will include (2) additional 15A 120V circuits.