Product Manual

6
Conductors must be properly supported, of approved insulative
qualities, protected by approved conduit, and of the correct wire
gauge size in accordance with applicable codes.
Be sure to maintain proper electrical clearance between live metal
parts and grounded metal. Allow at least 1/2 inch for 100-400
amp circuits.
CONNECTING CONTROL CIRCUIT
WIRES
Control system interconnections between the load center ATS and
the generator consist of Utility voltage sensing (wire nos. N1 and
N2) and ATS operating control wires (nos. 23, 15B or 194 and 0).
Connect wire nos. N1 and N2 to the 15A, 2-pole circuit breaker
provided and mounted in the top load center. Connect wire nos. 23,
15B or 194 and 0 to transfer switch operator. The transfer switch
operator requires a 5A maximum fused 12 Vdc supply for opera-
tion. When used with non-2008 and later model generators, it will
be necessary install a 5A fuse (supplied) in the +12 Vdc supply
line before it leaves the generator control panel.
Control circuit wires must be run in a separate conduit. The excep-
tion to this requirement is if the length is 30 feet or less, then the
control and power wires can be run in the same conduit.
All control wiring to be a minimum 300Vac rating and #14 AWG
size. Type THHN wire is recommended.
Consult drawing no. 0G4744 at the back of this manual for further
details.
FUNCTIONAL TESTS AND
ADJUSTMENTS
Following transfer switch installation and interconnection,
inspect the entire installation carefully. A competent, qualified
electrician should inspect it. The installation should comply
strictly with all applicable codes, standards, and regulations.
When absolutely certain the installation is proper and correct,
complete a functional test of the system.
n
Perform functional tests in the exact order
presented in this manual, or damage could be
done to the switch.
IMPORTANT: Before proceeding with functional tests, read and
make sure all instructions and information in this section are
understood. Also read the information and instructions of labels
and decals affixed to the switch. Note any options or accessories
that might be installed and review their operation.
MANUAL OPERATION
This transfer switch is suitable for manual transfer under load
providing the dead front cover is in place.
Manual operation must be checked BEFORE the transfer switch
is operated electrically. To check manual operation, proceed as
follows:
1. Turn the generator’s AUTO/OFF/MANUAL switch to OFF.
2. Turn OFF both UTILITY (service disconnect breaker) and the
main line circuit breaker on the generator.
3. Note position of the 2 switches below the transfer switch
operator.
• Utility supply switch (left side) ON and Generator supply
switch (right side) OFF – LOAD terminals are connected to the
Utility.
• Utility supply switch (left side) OFF and Generator supply
switch (right side) ON – LOAD terminals are connected to the
Generator.
CLOSE TO UTILITY SOURCE SIDE
Before proceeding, verify the position of the transfer mechanism
by observing the position of 125A, 2-pole switches.
If the Utility Supply switch (left side) is ON, no further action is
required.
If not, move the Utility Supply switch handle to the ON position.
Note: the Generator Supply switch handle should move to the OFF
position.
The customer load is now connected to the Utility supply.
CLOSE TO GENERATOR SOURCE SIDE
Before proceeding, verify the position of the transfer mechanism
by observing the position of 125A, 2-pole switches.
If the Generator Supply switch (right side) is ON, no further action
is required.
If not, move the Generator Supply switch handle to the ON posi-
tion. Note: the Utility Supply switch handle should move to the OFF
position.
The customer load is now connected to the Generator supply.
RETURN TO UTILITY SOURCE SIDE
Move the Utility Supply switch handle to the ON position. Note: the
Generator Supply switch handle should move to the OFF position.
The customer load is now connected to the Utility supply.
Operation