Hussmann Ingersoll Rand, User Manual

Page: 203 / 346

Electrical Data 3
Wire Size is based on specifications by Underwriters Laboratories and the National Electrical Code, and
is set on the breaker size chosen. The minimum wire size is 12 AWG. See table below.
Breaker Amperes Wire Size
AWG
Breaker Amperes Wire Size
AWG
0 to 20 12 116 to 130 1
21 to 30 10 131 to 150 0
31 to 50 8 151 to175 2/0
51 to 65 6 176 to 200 3/0
66 to 85 4 201 to 230 4/0
86 to 100 3 231 to 255 250 MCM
101 to 115 2 256 to 285 300 MCM
Marking on Hermetic Refrigerant Motor Compressors and Equipment
On every compressor nameplate there are minimum requirements for markings that are set by the
National Electrical Code, Underwriters Laboratories and the Air-Conditioning and Refrigeration
Institute. The requirements as set by each are similar in nature and are as follows:
A hermetic refrigerant motor-compressor shall be provided with a nameplate that shall indicate the
manufacturers name, trademark, or symbol; identifying designation; phase; voltage; and frequency.
The rated load current in amperes of the motor compressor shall be marked by the equipment
manufacturer on either, both the motor-compressor nameplate and the nameplate of the equipment in
which the motor-compressor is used. The locked rotor current of each single phase motor compressor
having a rated load current of more than 9 amperes at 115 volts, or more than 4.5 amperes at 230 volts,
and each poly-phase motor-compressor shall be marked on the motor-compressor nameplate.