Generac Power Systems RTSJ200A3, Owner'S Manual

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5
If ALUMINUM conductors are used, apply corrosion inhibitor to
conductors. Tighten terminal lugs to the torque values as noted on
the "Utility Service Disconnect Circuit Breaker", and on the decal
located on the inside of the door. After tightening terminal lugs,
carefully wipe away any excess corrosion inhibitor.

Use a torque wrench to tighten the conduc-
tors, being sure not to overtighten, or dam-
age to the insulating base could occur. If not
tightened enough, a loose connection would
result, causing excess heat which could
damage the switch base.
Connect power source load conductors to clearly marked transfer
mechanism terminal lugs as follows
1. Connect UTILITY (NORMAL) power source cables to the top
of the UTILITY SERVICE DISCONNECT circuit breaker.
2. Connect GENERATOR (STANDBY) source power cables to
ATS GENERATOR supply terminals, E1-E2.
3. Connect non-essential customer LOAD leads to LSS switch
terminals E1, E2.
4. Connect critical customer loads to the circuit breakers on the
load center provided.
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.
2.5 NEUTRAL CONNECTIONS
The main neutral block is provided for the connection of the
neutral (ungrounded conductors) of the Utility, Generator and non-
essential load neutrals. Tighten all wires to the specified torque.
Torque values are given on the information decal located on the
inside cover.
The main neutral block is connected (bonded) to the enclosure
metal by a busbar. If bonding of the neutral is not necessary, the
jumper can be removed. When the jumper bar is removed the
control wires should be connected as follows:
• #00 wire to the neutral block.
• GRD wire to the enclosure.
The essential load neutrals are to be connected on the busbars
mounted on the load center, next to the branch circuit breakers.
2.6 CONNECTING CONTROL
WIRES
Control system interconnections consist of N1, N2 and T1; and
leads 0, 15B/194 and 23. The control and power leads must be
routed in separate conduits. Recommended control wire gauge
sizes for this wiring depends on the length of the wire, as recom-
mended in the following chart:
MAXIMUM WIRE LENGTH
RECOMMENDED WIRE
SIZE
1-115 ft (1-35m) No. 18 AWG.
116-185 ft (36-56m) No. 16 AWG.
186-295 ft (57-89m) No. 14 AWG.
296-460 ft (90-140m) No. 12 AWG.
3.1 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.

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.
3.2 MANUAL OPERATION

Do NOT manually transfer under load.
Disconnect transfer switch from all power
sources by approved means, such as the
main circuit breaker(s).
3.2.1 ATS MANUAL OPERATION
A manual HANDLE is shipped with the transfer switch. Manual
operation must be checked BEFORE the transfer switch is oper-
ated electrically. To check manual operation, proceed as follows
(Figure 3.1):
1. Turn the generator’s AUTO/OFF/MANUAL switch to OFF.
2. Turn OFF UTILITY SERVICE DISCONNECT circuit breaker.
3. Note position of transfer mechanism main contacts by
observing the moveable contact carrier arm. This can be
viewed through the long narrow slot in the inside cover of the
ATS. The top of the moveable contact carrier arm is yellow to
be easily identified.
Operation