20
ACZ 010A through 039A
IOMM ACZ1
Notes for “Electrical Data”
1.
Field Fuse Size for recommended and maximum is based on use of a time-delay fuse.
2.
Unit wire size ampacity (MCA) is equal to 125% of the largest compressor-motor RLA plus
100% of RLA of all other loads in the circuit including the control transformer.
3.
Since the control transformer is furnished, no separate 115V power is required.
4.
If a separate 115V power supply is used for the control circuit, the wire sizing amps is 10 Amps.
5.
Recommended power lead wire sizes for three conductors per conduit are based on 100%
conductor ampacity in accordance with NEC. Voltage drop has not been included. Therefore, it
is recommended that power leads should be kept short. All terminal block connections must be
made with copper (type THW) wire.
6.
Single conductors should be used for power connections as listed under “Power Supply/Field
Wire Size.”
7.
“Recommended Fuse Sizes” are selected at approximately 150% to 175% of the largest
compressor RLA, plus 100% of all other loads in the circuit.
8.
“Maximum Fuse Sizes” are selected at approximately 225% of the largest compressor RLA, plus
100% of all other loads in the circuit.
9.
The recommended power lead wire sizes are based on an ambient temperature of 86°F.
Ampacity correction factors must be applied for other ambient temperatures. Refer to the
National Electrical Code Handbook.
Voltage Limitations:
Within 10% of nameplate rating.
Notes for “Compressor and Condenser Fan Amp Draw”:
1.
Compressor RLA values are for wiring sizing purposes only but do not reflect normal operating
current draw at rated capacity.
Notes for “Field Wiring Data” - Single Point Power:
1.
Single point power supply requires a single disconnect to supply electrical power to the unit.
This power must be fused.
2.
All field wiring to unit power block or non-fused disconnect switch must be copper.
3.
All field wire size values given in table apply to 75°C rated wire per NEC.