42
Table 13 — Electrical Data — 30MPW050-071 Units without High Condensing Option
LEGEND
*Supply Range — Units are suitable for use on electrical systems
where voltage supplied to the unit terminals is not below or above
the listed range limits.
NOTES:
1. All units have one field power terminal block.
2. Maximum incoming wire size is as follows:
For units with terminal block:
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 required.
4. Any field modification of factory wiring must be in compliance
with all applicable codes. Field-installed power wires must be
rated 75°C minimum.
5. Use copper conductors only.
6. Control circuit power supply is 24-v single phase. Control power
is supplied by the factory-installed control transformer.
7. The MOCP of the electrical distribution 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-
tribution panel associated with this bank 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
bank of chillers.
8. The MCA of the electrical distribution 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 distribu-
tion panel associated with this bank 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
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