Disconnect Switch And Unit; Power Wiring Connections; American/European Wire Conversions; Thru-Base Connection Fittings - Carrier 50TC Installation Instructions Manual

The unit is factory wired for the voltage shown on ;the
nameplate. Refer to the unit label diagram for additional
information.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in
intermittent operation or performance satisfaction.
Do not connect aluminum wire between disconnect
switch and air conditioning unit.. Use only copper
wire. (See Fig. 17.)
ELECTRIC
DISCONNECT
SWITCH
WIRE ONLY
ALUMINUM
Fig. 17 - - Disconnect Switch and Unit
Units Without Factory- - Installed Disconnect —
When installing units, provide a disconnect switch of
adequate size per local or national wiring code.
Disconnect sizing data is provided on the unit informative
plate. Locate on unit cabinet or within sight of the unit per
national or local codes. Do not cover unit informative
plate if mounting the disconnect on the unit cabinet.
Units with Factory- - Installed Disconnect —
The factory- - installed option disconnect switch is located
in a weatherproof enclosure located under the main
control box. The manual switch handle is accessible
through an opening in the access panel.
All units - -
All field wiring must comply with all local codes. Size wire
based on MCA (Minimum Circuit Amps) on the unit
informative plate. See Fig. 18 for power wiring connections
to the unit power terminal block and equipment ground.
Provide a ground- - fault and short- - circuit over- - current
protection device (fuse or breaker) per local code (or
U.S.A. NEC Article 440). Refer to unit informative data
plate for MOCP (Maximum Over- - current Protection)
device size.
All field wiring must comply with the appropriate national
electrical codes and local requirements.
COPPER
WIRE
A93033
Units Without Disconnect Option
C
11
Disconnect
L1
Units With Disconnect Option
1
Optional
Disconnect
2
L1
Disconnect factory test leads; discard.
Fig. 18 - - Power Wiring Connections
Table 2 – American/European Wire Conversions
AMERICAN
Industry American
Standard Size Conversion (mm
20 AWG 0.52
18 AWG 0.82
16 AWG 1.30
14 AWG 2.08
Thru- - Base Connections —
This service connection kit consists of a 12.7 mm
electrical bulkhead connector and a 31.75 mm (1
electrical bulkhead connector, all factory- - installed in the
embossed (raised) section of the unit basepan in the
condenser section. The 12.7 mm
connector enables the low- - voltage control wires to pass
through the basepan. The 31.75 mm (1
bulkhead connector allows the high- - voltage power wires
to pass through the basepan. See Fig. 19.
Fig. 19 - - Thru- - Base Connection Fittings
14
IFC
13 13
L2 L3
Factory
Wiring
3 5
Switch
4 6
L 2 L3
C09411
EUROPEAN
European
2
) Standard Size (mm
0.5
1.0
1.5
2.5
(1
/
2
1
/
4
(1
/ - - in) bulkhead
2
1
/ - - in) electrical
4
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
C08637
2
)
- - in)
- - in)