58
RT-SVX092A-EN
Field Installed Power Wiring
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as
described in NEC and your local/state/national
electrical codes.
Note: Refer to Table 16, p. 58 for ground wire torque.
An overall dimensional layout for the field installed wiring
entrance into the unit is illustrated in the Dimensions and
Weights chapter. See the following guidelines to confirm
the unit supply power wiring is properly sized and installed.
Verify the power supply available is compatible with unit
nameplate ratings. The available supply power must be
within 10 percent of the rated voltage stamped on the
nameplate. Use only copper conductors to connect the
power supply to the unit.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not
designed or qualified to accept other types of
conductors.
Important: If the unit is not equipped with an optional
factory installed non-fused disconnect switch
or circuit breaker, a field supplied disconnect
switch must be installed at or near the unit in
accordance with the National Electrical Code
(NEC latest edition).
Main Unit Power
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as
described in NEC and your local/state/national
electrical codes.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
WARNING
Electrical Shock Hazard!
Failure to follow instructions below could result in
death or serious injury.
Properly connect the system’s oversized protective
earthing (grounding) terminal(s).
Standard Wiring
1. Location of the applicable electrical service entrance is
illustrated in the Dimensions and Weights chapter.
Complete the unit power wiring connections at HTB1
main power terminal block in unit control panel. Refer to
the customer connection diagram shipped with the unit
for specific termination points.
2. Provide proper grounding for the unit in accordance
with local and national codes. Refer to Table 16, p. 58
for ground wire torque.
Table 16. Ground wire torque
Ground Wire Size (AWG) Torque (in-lbs)
10 – 14 35
8 40
4 – 6 45
2/0 – 0 50
3. Units with factory installed circuit breakers may come
equipped with an adjustable dial located on front of the
circuit breaker. Refer to “Pre-Start,” p. 64 for
instructions corresponding to adjustment of breaker dial
(s).
Optional TBUE Wiring (Through-the-
Base Electrical Option)
• Location of the applicable electrical service is illustrated
in Figure 84, p. 60 through Figure 87, p. 60. Refer to
the customer connection diagram shipped with the unit
for specific termination points. The termination points,
depending on the customer option selected, would be a
factory mounted non-fused disconnect switch (UDC) or
circuit breaker (UCB). If neither a factory mounted non-
fused disconnect switch (UDC) or circuit breaker (UCB)
was factory mounted, field wiring connections should
Installation
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