RTS KGATX0101400 - Manual (Page 6)

4

Use a torque wrench to tighten the conductors,
being sure not to overtighten, or damage to
the switch base could occur. If undertightened,
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 fol-
lows
1. Connect UTILITY (NORMAL) power source cables
to switch terminals N1, N2, (N3).
2. Connect EMERGENCY (STANDBY) source power
cables to transfer switch terminals E1, E2, (E3).
3. Connect customer LOAD leads to switch termi-
nals T1, T2, (T3).
4. Connect neutral conductors of UTILITY,
EMERGENCY and customer LOAD to the neutral
block.
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 CONNECTING START CIRCUIT
WIRES
Control system interconnections consist of UTILITY
1 and 2, and leads 23 and 194. Control system
interconnection leads must be run in a conduit that
is separate from the AC power lead. Recommended
wire gauge sizes for this wiring depends on the length
of the wire, as recommended below:
2.6 AUXILIARY CONTACTS
If desired, there are Auxiliary Contacts on the transfer
switch to operate customer accessories, remote advi-
sory lights, or remote annunciator devices. A suitable
power source must be connected to the COMMON (C)
terminal. See Figure 2.3.
Contact operation is shown in the following chart:
NOTE:
Auxiliary Contacts are rated 10 amps at 125 or
250 volts AC. DO NOT EXCEED THE RATED
VOLTAGE AND CURRENT OF THE CONTACTS.
Figure 2.3 – Auxiliary Contacts
Side views shown in Utility position
3.1 FUNCTIONAL TESTS AND
ADJUSTMENTS
Following transfer switch installation and intercon-
nection, inspect the entire installation carefully. A
competent, qualified electrician should inspect it.
The installation should comply strictly with all appli-
cable codes, standards, and regulations. When abso-
lutely certain the installation is proper and correct,
complete a functional test of the system.

Perform functional tests in the exact order pre-
sented in this manual, or damage to the switch
could be done.
IMPORTANT: Before proceeding with functional tests,
read and make sure you understand all instructions
and information in this section. Also read the infor-
mation and instructions of labels and decals affixed
to the switch. Note any options or accessories that
might be installed and review their operation.
MAXIMUM WIRE LENGTH RECOMMENDED WIRE
SIZE
460 feet (140m) No. 18 AWG.
461 to 730 feet (223m) No. 16 AWG.
731 to 1,160 feet (354m) No. 14 AWG.
1,161 to 1,850 feet (565m) No. 12 AWG.
Switch Position
Utility Standby
Common to Normally Open Open Closed
Common to Normally Closed Closed Open
Section 3 — Operation
RTS “W” Type Transfer Switch