TP-6126 8/02 11Section 2 Installation
Connect the cables. Be careful when stripping
insulation from the cables; avoid nicking or ringing the
conductor. Clean cables with a wire brush to remove
surface oxides before connecting them to the terminals.
Apply joint compound to the connections of any
aluminum conductors.
Refer to Figure 2-20, Interconnection Diagram, and the
wiring diagram provided with the switch. A list of the
drawing numbers for the wiring diagrams and
schematics is given in Appendix B.
The connection points on the contactor are labeled
Normal, Emergency, and Load. Be sure to follow the
phase markings (A, B, C, and N). For single-phase
systems, connect to A and C.
Note: Connect the source and load phases as
indicated by the markings and drawings to
prevent short circuits and to prevent
phase-sensitive load devices from
malfunctioning or operating in reverse.
On models equipped with the optional preferred source
switch, connect source N to the normal side and source
E to the emergency side of the contactor.
Verify that all connections are consistent with drawings
before tightening the lugs. Tighten all cable lug
connections to the torque values shown on the label on
the switch. (See Figure 2-19 for a typical rating/torque
label.) Carefully wipe off any excess joint compound
after tightening the terminal lugs.
For load connections to bus bars, use a compression
washer, flat washer, and a minimum grade 5 bolt and
torque the connections to the values in Figure 2-18.
Bolt Torque
,
inches
ft. lbs. Nm
1/4 7 9.5
5/16 12 16.3
3/8 20 27.1
1/2 50 67.8
5/8 95 128.8
3/4 155 210.2
Figure 2 -18 Tightening torque for bus bars
USE COPPER OR ALUMINUM WIRE
FOR POWER TERMINALS
RECOMMENDED TIGHTENING
200 480 FUSE ANY CLASS J
TORQUE 600 IN--LBS
AMPS AT THE VOLTAGE SHOWN.
BREAKER/MFR/TYPE
DELIVERING NOT MORE THEN THE RMS SYMM
RATED FOR USE ON A CIRCUIT CAPABLE OF
ONLY OR BY FUSES THIS TRANSFER SWITCH IS
WITHOUT AN ADJUSTABLE SHORT--TIME RESPONSE
WHEN PROTECTED BY A CIRCUIT BREAKER
SWITCH RATING, 240V MAX.
TUNGSTEN LOAD DOES NOT EXCEED % OF
NOT EXCEED THE SWITCH AMP RATING AND THE
LOAD AMPS AND AMPS OF OTHER LOADS DOES
ING EQPT, WHERE THE SUM OF MOTOR FULL--
DISCHARGE AND TUNGSTEN LAMPS, ELEC HEAT--
SUITABLE FOR CONTROL OF MOTORS, ELEC
RMS SYMM
VOLTS
MAX
X1000
AMPS
MAX
AMPS
42 480 GE SGL4,SGP4,TB4, 400
THLC4,TLB4 400
SKHA,SKL8,SKP8,TKL
SGLA,SGL6,SGP6,TB6
800
600
42 480 I--T--E CJD6,HHJD6, 400
CLD6,HHLD6,HHLXD6,HLD6,
HHJXD6,HJD6,SCJD6,SHJD6
600
400
CMD6,HMD6,HND6,MD6,MXD6,
SCLD6,SHLD6
800
600
SCMD6,SHMD6,SMD6,SND6 800
MH
42 480 SQUARE D LC,LI
800
600
42 480 WESTH HKD,KDC,LCL, 400
HLD
TRI--PAC LA
600
400
TRI--PAC NB 800
100
35
22 600
480 ANY
ANY
ANY
ANY
ANY
ANY
PER NEC
PER NEC
483500--007
B
REV
USE 75 °C MIN. CU/AL WIRE FOR POWER
CONNECTIONS. USE 60 °CMIN.CUWIREFOR
CONTROLS.
600
42 480 MERLIN GERIN
42 480 ABB S5
CJ600
S6
400
600
800
007
1
1. Torque specification
Figure 2 -19 Typical Rating/Torque Label
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