Step 5 - Make Electrical Connections; Field Power Supply - Carrier 50TFQ008 Installation, Start-Up And Service Instructions Manual

Step 5 — Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground to minimize the possibility of personnal injury if
an electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control com-
partment, or conduit approval for electrical ground when
installed in accordance with local electrical codes. Failure
to follow this warning could result in the installer being lia-
ble for personal injury of others.
FIELD POWER SUPPLY — All units are factory wired for
the voltage shown on the nameplate.
Refer to unit label diagram for additional information. Lead
wires are provided for field wire connections. Use factory-
supplied splices or suitable copper connector.
When installing units, provide a disconnect.
NOTE: If accessory thru-the-bottom connections are used,
refer to the accessory installation instructions for power wiring.
All field wiring must comply with local requirements. In-
stall field wiring as follows:
1. Install conduit through side panel openings. Install con-
duit between disconnect and single-point box. Refer to
Fig. 6 and 7.
2. Install power lines to terminal connections as shown in
Fig. 8.
3. Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate (see
Table 2). Voltages between phases must be balanced
within 2% and the current within 10%. Use the formula
shown in Table 2, Note 3 to determine the percent voltage
imbalance. Operation on improper line voltage or exces-
sive phase imbalance constitutes abuse and may cause
damage to electrical components. Such operation would
invalidate any applicable Carrier warranty.
DISCONNECT EMT (ELECTRIC
MOUNTING METALLIC TUBING)
LOCATION OR RIGID CONDUIT
(FIELD SUPPLIED)
HOLE RACEWAY EURO-STYLE
IN END CONTROL
PANEL BOX
Fig. 6 — Component Location
BRACKET AND CENTER
CONDUIT POST
BOOT
SINGLE SINGLE
POINT POINT BOX
BOX MOUNTING
SCREWS
Fig. 7 — Conduit Installation
LEGEND
Disconnect Per Local Codes
Single Point Box
Accessory
Field Wiring
Fig. 8 — Power Wiring Connections
8