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42
Table 13 — Electrical Data — 30MPW050-071 Units without High Condensing Option
LEGEND
*
Supply Range — Units are suita
b
le for use on electrical systems
where voltage supplied to the unit terminals is not
b
elow or a
b
ove
the listed range limits.
NOTES:
1. All units have one field power terminal
b
lock.
2. Maximum incoming wire size is as follows:
For units with terminal
b
lock:
500 kcmil for unit sizes 050-071; all voltages.
For units with optional non-fused disconnect:
350 kcmil for unit sizes 050-071, 208/230-3-60 voltages.
3/0 AWG for all other voltages.
3. Additional control circuit power is not re
q
uired.
4. Any field modification of factory wiring must
b
e in compliance
with all applica
b
le codes. Field-installed power wires must
b
e
rated 75°C minimum.
5. Use copper conductors only.
6. Control circuit power supply is 24-v single phase. Control power
is supplied
b
y the factory-installed control transformer.
7. The MOCP of the electrical distri
b
ution panel is calculated as
follows:
First, calculate the MOCP of each individual chiller. MOCP =
2.25 (Largest RLA) + Sum of the other RLAs. Sum the MOCPs
of each individual chiller. This is the MOCP of the electrical dis-
tri
b
ution panel associated with this
b
ank of chillers. Select the
next size down fuse from this value.
The recommended fuse size in amps (RFA) is calculated as fol-
lows: RFA = 1.50
*
(largest RLA) + (Smallest RLA) for the given
b
ank of chillers.
8. The MCA of the electrical distri
b
ution panel is calculated as
follows:
First, calculate the MCA of each individual chiller. MCA = 1.25
(Largest RLA) + sum of the other RLAs. Sum the MCAs of
each individual chiller. This is the MCA of the electrical distri
b
u-
tion panel associated with this
b
ank of chillers.
UNIT SIZE
30MPW
VOLTS
NAMEPLATE
VOLTAGE*
COMPRESSOR A1
COMPRESSOR A2
UNIT
RLA
LRA
RLA
LRA
MCA
ICF
MOCP
REC
FUSE
MIN
MAX
050
208/230-3-60
187
253
79.4
418
79.4
418
178.7
497.1
250
200
380-3-60
342
418
48.1
252
48.1
252
108.2
300.3
150
125
460-3-60
414
508
39.7
212
39.7
212
89.3
251.9
125
100
575-3-60
518
632
31.8
168
31.8
168
71.6
199.9
100
80
380/415-3-50
342
440
39.7
212
39.7
212
89.3
251.9
125
100
055
208/230-3-60
187
253
79.4
418
98.4
477
202.4
556.7
300
250
380-3-60
342
418
48.1
252
59.5
299
122.5
346.8
175
150
460-3-60
414
508
39.7
212
49.2
241
101.2
280.4
150
125
575-3-60
518
632
31.8
168
39.3
194
80.9
225.4
110
100
380/415-3-50
342
440
39.7
212
49.2
241
101.2
280.4
150
125
060
208/230-3-60
187
253
79.4
418
106.7
582
212.8
661.7
300
250
380-3-60
342
418
48.1
252
64.6
355
128.9
403.2
175
150
460-3-60
414
508
39.7
212
53.4
280
106.5
320.1
150
125
575-3-60
518
632
31.8
168
42.7
225
85.2
256.7
125
100
380/415-3-50
342
440
39.7
212
53.4
280
106.5
320.1
150
125
065
208/230-3-60
187
253
79.4
418
112.5
578
220.0
657.8
300
250
380-3-60
342
418
48.1
252
67.2
355
132.1
403.5
175
150
460-3-60
414
508
39.7
212
55.5
290
109.1
329.9
150
125
575-3-60
518
632
31.8
168
44.4
255
87.3
286.7
125
100
380/415-3-50
342
440
39.7
212
55.5
290
109.1
329.9
150
125
071
208/230-3-60
187
253
98.4
477
112.5
578
239.0
676.8
350
300
380-3-60
342
418
59.5
299
67.2
355
143.5
414.9
200
175
460-3-60
414
508
49.2
241
55.5
290
118.6
339.4
150
150
575-3-60
518
632
39.3
194
44.4
255
94.8
294.2
125
110
380/415-3-50
342
440
49.2
241
55.5
290
118.6
339.4
150
150
AWG
—
American Wire Gage
ICF
—
Maximum instantaneous current flow during starting.
kcmil
—
Thousand circular mils
LRA
—
Locked Rotor Amps
MCA
—
Minimum Circuit Amps (for wire sizing). Complies with
NEC, Section 430-24.
MOCP
—
Maximum Overcurrent Protection
Rec
Fuse
—
Recommended dual element fuse amps (150% of
compressor RLA). Size up to the next standard fuse
size.
RLA
—
Rated Load Amps