Winco PSS12H4W/A - Manual (Page 9)

PAGE 7 4062-00 60706-167
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***** DANGER *****
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Be certain the operation selector switch on the front of the
A.T.S. Control is in the “stop” position and the main power
switch “off”. For your own protection, verify these impor-
tant safety precautions yourself with reliable instruments
before proceeding.
A.C. ELECTRICAL CONNECTIONS
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***** WARNING *****
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A FUSED DISCONNECT OR CIRCUIT BREAKER
MUST BE INSTALLED BETWEEN THE GENERATOR
AND THE A.T.S. PANEL TO PREVENT OVERLOADING
AND BURNING OUT THE GENERATOR. FAILURE TO
PROVIDE A FUSED DISCONNECT OR CIRCUIT
BREAKER, RATED AT GENERATOR RATING WILL
VOID YOUR WARRANTY IN CASE OF GENERATOR
FAILURE.
Generator Connections
To gain access to the customer connections Remove
the end panel opposite the hot air discharge end. All
connections including AC & DC connections to the ATS,
120 Volt power connection for battery charger, and battery
installation are made behind this panel. After removing
the end panel you will need to remove the cover over the
connection box in the upper right hand corner. Knockouts
are provided on the outside of the enclosure for your
convenience. See page 13 for unit layout.
Three AC power leads are required between the
generator and the A.T.S. Two hot leads connected
generator leads #1 and #4 and a neutral lead connected
to both generator leads #2 and #3. A ground wire is also
required, which is connected to the ground lug mounting
bolt. These units are shipped with no neutral to
ground bond. You will need to run both the neutral and
ground leads in addition to the two power leads all the
way back to your distribution panel. Your distribution
panel should contain your only neutral to ground bond.
All power leads from the generator to the A.T.S. must be
sized to handle rated generator output amperage at a
minimum, the type of wire you use will determine the
gauge required. Consult your local wire supplier for
proper gauge and type for your installation.
In addition to the power leads you will also need to run
a three wire 120 volt, 15 amp GFCI protected circuit from
your distribution panel to the generator. This circuit will be
used to power the battery charger.
The last four wires you will need are the DC control
leads for the start circuit in the A.T.S. These last four
connections will be discussed later in more detail.
WINCO UL ATS (ASCO165)
The standby generator terminals in the A.T.S are
marked “ALTERNATE L2 & L6”. The “hot” leads X1 and
X4 from the generator are connected to the terminals L2 &
L6.
The normal line power terminals in the A.T.S. are
marked “PREFERRED - L1 & L5”. The “hot” line power
leads are L1 and L3 from your normal power supply are
connected to terminals L1 and L3.
The load terminals in the A.T.S. are marked “LOAD - L3
& L7”. The leads to the load distribution panel are
connect to terminals L3 & L7.
The neutral leads from all three locations are connected
to the isolated terminal lugs on the sidewall of the cabinet.
This terminal block is labeled “NEUTRAL” and the
terminal lugs are mounted on red isolation standoffs.
The ground leads from all locations they are connected
to the grounded terminal lugs also on the side wall. This
set of terminals is labeled “GROUND”.
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 instructions
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.