Sullair TSR20, User Manual

Page: 35 / 48

SECTION 4 TSR32 USER MANUAL R00
35
4.7 ELECTRICAL PREPARATION
Interior electrical wiring is installed at the factory.
Required customer wiring should be done by a
qualified electrician in compliance with OSHA,
National Electric Code and/or any applicable local
electrical codes. Customer to supply power via cam-
lock located on end of enclosures. An electrical
check should be made to ensure that the first start-up
will be successful. The compressor and drive should
be properly grounded/earthed in accordance with
applicable codes, regulations, and requirements.
Feeder cables should be sized by the customer/
electrical contractor to ensure that the circuit is
balanced and not overloaded by other electrical
equipment. The length of wiring from a suitable
electrical power source is critical because voltage
drops can adversely effect the performance of the
compressor. Refer to
Table 4-2:Motor Wiring Basic
Data .
Parallel feeder cable connections to incoming
terminal cam-locks L1-L2-L3 should be tight and
clean. These are located on end of package. Behind
the access door located above the cam-loks is the
package circuit breaker disconnect, supplied for
additional safety.
The applied voltage must conform to the motor and
compressor data plate ratings.
1. Check incoming voltage. The incoming
rating/specifications.
2. Check motor starting device and overload
heater sizes.
3. Check all electrical connections for
tightness.
Table 4-2: Motor Wiring Basic Data
480 V 40 C
HP (I low) Current I
low OL
Phase Wire
MCM
GND
Conductor
MAX 300 HP 385 2x300 300MCM
WARNING
Energized internal components are a poten-
tially FATAL SHOCK HAZARD. Disconnect
all power before performing any work on the