Main Unit Power Wiring - Trane IntelliPak Installation, Operation And Maintenance Manual

Installation
Electrical Entrance diagram), for dimensional data.
On 20-130 ton units operating on 460/575 volts, only one
power entry is required, as illustrated in
Use the information provided in
"Power Wire Sizing & Protection Device Equations" , to
determine the appropriate wire size and Maximum Over
current Protection for the heaters/unit.
Note: Each power supply must be protected from short
circuit and ground fault conditions.To comply with
NEC, protection devices must be sized according to
the "Maximum Over current Protection" (MOP) or
"Recommended Dual Element" (RDE) fuse size
data on the unit nameplate.
Provide grounding for the supply power circuit in the
electric heat control box.

Main Unit Power Wiring

WARNING
Proper Field Wiring and Grounding
Required!
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 electrical codes. Failure to
follow code could result in death or serious injury.
Figure 43, p. 70 lists the field connection wire ranges for
both the main power terminal block 1TB1 and the optional
main power disconnect switch 1S14.
the component electrical data for 20 through 130 ton units.
The electrical service must be protected from over current
and short circuit conditions in accordance with NEC
requirements. Protection devices must be sized according
to the electrical data on the nameplate. Refer to the "Power
Wire Sizing & Protection Device Equations" , for
determining;
a. the appropriate electrical service wire size based on
"Minimum Circuit Ampacity" (MCA),
b. the "Maximum Over current Protection" (MOP)
device,
c. the "Recommended Dual Element fuse size" (RDE).
1. If the unit is not equipped with an optional factory
installed non-fused disconnect switch, a field supplied
disconnect switch must be installed at or near the unit
in accordance with the National Electrical Code (NEC
latest edition). Refer to the "Power Wire Sizing &
Protection Device Equations" (DSS calculation), for
determining the correct size.
2. Location for the electrical service entrance is illustrated
in Figure 15, p. 29. Complete the unit's power wiring
connections onto either the main terminal block 1TB1,
or the factory mounted non-fused disconnect switch
56
Figure 40.
Table 22, p. 59 and the
Table 22, p. 59 lists
1S14, inside the unit control panel. Refer to the
customer connection diagram that shipped with the
unit for specific termination points.
3. Provide proper grounding for the unit in accordance
with local and national codes.
RT-SVX36K-EN