JOHNSON CONTROLS
59
SECTION 5 – TECHNICAL DATA
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
55
ELECTRICAL NOTES
1. Minimum Circuit Ampacity (MCA) is based on 125% of the rated load amps for the largest motor plus 100% of the rated load amps for
all other loads included in the circuit, per N.E.C. Article 43024. If the optional Factory Mounted Control Transformer is provided, add the
following MCA values to the electrical tables for the system providing power to the transformer: 17, add 2.5 amps; 28, add 2.3 amps; 40,
add 1.5 amps, 46, add 1.3 amps; 58, add 1 amp.
2. The minimum recommended disconnect switch is based on 115% of the rated load amps for all loads included in the circuit, per N.E.C.
Article 440.
3. Minimum fuse size is based upon 150% of the rated load amps for the largest motor plus 100% of the rated load amps for all other loads
included in the circuit to avoid nuisance trips at startup due to lock rotor amps. It is not recommended in applications where brown outs,
frequent starting and stopping of the unit, and/or operation at ambient temperatures in excess of 95ºF (35ºC) is anticipated.
4. Maximum fuse size is based upon 225% of the rated load amps for the largest motor plus 100% of the rated load amps for all other loads
included in the circuit, per N.E.C. Article 440-22.
5. Circuit breakers must be UL listed and CSA certified and maximum size is based on 225% of the rated load amps for the largest motor plus
100% of the rated load amps for all other loads included in the circuit. Otherwise, an HACR type circuit breakers must be used. Maximum
HACR circuit breaker rating is based on 225% of the rated load amps for the largest motor plus 100% of the rated load amps for all other
loads included in the circuit.
6. The “INCOMING WIRE RANGE” is the minimum and maximum wire size that can be accommodated by the unit wiring lugs. The (2)
preceding the wire range indicates the number of termination points available per phase of the wire range specified. Actual wire size and
number of wires per phase must be determined based on the National Electrical Code,
using copper connectors only
. Field wiring must
also comply with local codes.
7. An equipment ground lug(s) is provided for the incoming power. Ground line sizing shall be in accordance with the current NEC Table 250-
122.
8. Field Wiring by others which complies to the National Electrical Code and Local Codes.
9. Voltage Utilization Range
RATED VOLTAGE
UTILIZATION RANGE
200/60/3
180 - 220
230/60/3
208 - 254
380/60/3
342 - 402
460/60/3
414 - 508
575/60/3
520 - 635
LEGEND
ACR
ACROSS THE LINE START
C.B.
CIRCUIT BREAKER
D.E.
DUAL ELEMENT FUSE
DISC SW
DISCONNECT SWITCH
FACT MOUNT CB
FACTORY MOUNTED CIRCUIT BREAKER
FLA
FULL LOAD AMPS
HZ
HERTZ
MAX
MAXIMUM
MCA
MINIMUM CIRCUIT AMPACITY
MIN
MINIMUM
MIN NF
MINIMUM NON FUSED
RLA
RATED LOAD AMPS
S.P. WIRE
SINGLE POINT WIRING
UNIT MTD SERV SW
UNIT MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH)
LRA
LOCKED ROTOR AMPS
ECWT
ENTERING CONDENSER WATER TEMPERATURE
