Carrier 50TCQD Installation Instructions Manual page 14

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. 16.)
ELECTRIC
DISCONNECT
SWITCH
WIRE ONLY
ALUMINUM
Fig. 16 - - Disconnect Switch and Unit
Units Without Factory- - Installed Disconnect —
When installing units, provide a disconnect switch per
NEC (National Electrical Code) of adequate size.
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 the main control box. The manual switch handle is
accessible on the corner post adjacent to the control box
access panel.
All units - -
All field wiring must comply with NEC and all local
codes. Size wire based on MCA (Minimum Circuit Amps)
on the unit informative plate. See Fig. 17 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 NEC Article 440
(or local codes). Refer to unit informative data plate for
MOCP (Maximum Over- - current Protection) device size.
All field wiring must comply with the NEC and local
requirements.
COPPER
WIRE
A93033
Units Without Disconnect Option
11
Disconnect
L1
208/230-3-60
460-3-60
575-3-60
Units With Disconnect Option
Factory
Wiring
T1
Optional
Disconnect
Switch
L1
L1
Fig. 17 - - Power Wiring Connections
Convenience Outlets —
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits may use
multiple disconnects. Check convenience outlet for
power status before opening unit for service. Locate
its disconnect switch, if appropriate, and open it.
Tag- - out this switch, if necessary.
Two types of convenience outlets are offered on 48TC*D
models: Non- - powered and unit- - powered. Both types
provide a 125- - volt
circuit- - interrupter) duplex receptacle rated at 15- - A
behind a hinged access cover, located on the corner panel
of the unit. See Fig. 18.
14
TB
12 13
per
NEC
L2 L3
T2 T3
L2 L3
L2 L3
C09057
GFCI (ground- - fault