Winco PSS12H2W/A - Manual (Page 10)

PAGE 8 60706-165 3315-10
The last two wires you will need are the DC control
leads for the start circuit in the A.T.S. These last two
connections wil be discussed later in more detail.
A.T.S .Connections - for standard Non-UL WINCO ATS
The standby generator terminals in the A.T.S are
marked “GENERATOR - G1, G-N, G3”. The “hot” leads #1
and #4 from the generator are wired to the generator side
contactor, terminals G1 and G3.
The line terminals in the A.T.S. are marked “LINE - L1,
L-N, L3”. The “hot” line leads L1 and L3 are wired to the
line side contactor, terminals L1 and L3.
The load terminals in the A.T.S. are marked “LOAD - T1,
T-N, T3”. The “hot” leads T1 and T3 are wired to the
bottom side of both the line side and the generator side
contactor.
If you are using a separate ground lead it is routed to
the ground lug in the A.T.S.
WINCO UL ATS
The only significant difference when making your AC
connections in the ULATS, is the AC terminals are
labeled differently. Instead of labeling the incoming
power line L1 and L3, the ULATS identifies the normal
power connection as N1 and N3. Likewise the generator
connection terminals are labeled E1 and E3 versus G1
and G3 in the standard WINCO Non-UL panels. The
load terminals are labeled T1 and T3, same as in the
Non-UL switches.
INSTALLATION NOTES
The load current carrying wires (L) and (T) must be
sized to handle the maximum load current without
excessive voltage drop. By code, the wire must be heavy
enough to handle the full current rating of the main line
circuit-breaker (or fuse) in the entrance (or sub-panel)
protecting the contactor switch.
All wires should be installed in rigid or flexible conduit.
(Knockouts are provided in the control box)
Because of the many different types of service, feeder,
and distribution equipment, no specific wiring instruc-
tions can be provided. It is, however, recommended that
only copper wire be used. In all cases it is essential that
while the load is connected to the generator, there can be
absolutely no feedback from the generator to the power
line or the power line to the generator. When properly
installed, the normal A.T.S. control and safety systems
will eliminate all paths for feedback. Check with your
local electrical inspector on applicable local, state and
federal codes.
*************
***** WARNING *****
*************
A service disconnect must be installed in front of the
A.T.S. panel as the A.T.S is not service entrance rated.
This will allow you to test the generator under load.
Should you ever have to work on the switch, you will be
able to disconnect the power and work on the switch cold
without having the power company pull your meter.
To wire the automatic transfer switch into the existing
wiring, first determine which circuits will be on the
emergency load circuit. If the entire load is to be trans-
ferred, the transfer switch can be wired in directly after the
watt-hour meter and the service entrance, providing the
service entrance ampere rating is within the transfer
switch’s rated capability.
If only specific circuits are to be powered under
emergency power failure conditions, an additional
distribution panel designated “emergency distribution
panel” must be installed.
All selected emergency circuits are removed from main
distribution panels and reinstalled in the emergency
distribution panel. Suggested circuits: freezer, refrigera-
tor, furnace, emergency lights, sump pump, emergency
outlet circuits, etc. Total running load must not exceed
generator rating.
D.C. ELECTRICAL INTERCONNECTION
*******CAUTION******
Never run the AC and DC wiring in the same conduit.
WINCO NON-UL ATS
Two control wires are required to be installed between
the A.T.S. panel and the generator control terminal box.
Depending on the distance 14 to 16 gauge stranded wire
should be used. These wires will be labeled “Bat -”, and
“Start”.
The control wires will be connected as follows in the
generator control terminal box:
ATS Panel Generator Control Panel
Start 1 to Wire # S1, (Bat Neg)
Start 23 to Wire # S23 (Start)
WINCO UL ATS
Your DC connection points in the UL ATS are marked
differently than the terminal markings in the Non-UL ATS.
Instead of being marked “Start 1” and Start 23” they are
marked start contacts “11” and “12”. The wire labeled
“S1” is routed to start contact “11” and the wire labeled
“S23” is routed to start contact “12”