CAC / BDP 8kW, Owner'S Manual

Page: 49 / 116

5
Before connecting wiring cables to terminals, remove
any surface oxides from the cable ends with a wire
brush. All power cables must enter the enclosure
through the knockouts provided. This is necessary
to maintain the NEMA/UL type 3 rating. If mounted
indoors, conduits can enter the enclosure above the
knockouts. If not using the knockouts, entry must be
at or below knockouts.
If ALUMINUM conductors are used, apply corro-
sion 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 inhibi-
tor.

Use a torque wrench to tighten the conductors,
being sure not to overtighten, or damage to
the insulating base could occur. If not tightened
enough, a loose connection would result, caus-
ing 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 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 connec-
tion of the neutral (ungrounded conductors) of the
Utility, Generator and non-essential load neutrals.
Tighten all wires to the specified torque. Torque val-
ues 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 and
N2, and leads 0, 15B and 23. Control system inter-
connection leads can be run in the same conduit as
the AC power lead if the conduit length is less than
35 feet, and ALL of the wiring is rated for 600V.
If the conduit length between the generator and
PowerManager LTS is more than 35 feet, the control
and power leads must be routed in separate con-
duits. Recommended wire gauge sizes for this wiring
depends on the length of the wire, as recommended
in the following chart:
MAXIMUM WIRE
RUN LENGTH
RECOMMENDED WIRE
SIZE
35 feet (10.67m) No. 16 AWG.
60 feet (18.29m) No. 14 AWG.
90 feet (27.43m) No. 12 AWG.
3.1 FUNCTIONAL TESTS AND
ADJUSTMENTS
Following transfer switch installation and inter-
connection, inspect the entire installation care-
fully. A competent, qualified electrician should
inspect it. The installation should comply strictly
with all applicable codes, standards, and regula-
tions. When absolutely 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 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 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.
Section 3 — Operation
RTSS Type Transfer Switch