YORK INTERNATIONAL
10
NOTES
1. Minimum Circuit Ampacity (MCA) is based on 125% of the rated load amps for the largest motor plus 100% of the loaded amps for all other
loads included in the circuit, per N.E.C. Article 430-24. If a Factory Mounted Control Transformer is provided, add the following to the
system #1 MCA values in the YCA Tables: -17, add 10 amps; -28, add 9 amps; -46, add 4 amps; -58, add 3 amps.
2. Minimum fuse size is based on 150% of the largest motor RLA plus 100% of the remaining RLAs. (U.L. Standard 1995, Section 36.1). 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 95°F is anticipated.
3. Maximum dual element fuse size is based on 225% maximum plus 100% of the rated load amps for all other loads included in the circuit,
per N.E.C. 440-22.
4. The recommended disconnect switch is based on a minimum of 115% of the summation rated load amps of all the loads included in the
circuit, per N.E.C. 440-12A1.
5. Maximum HACR is based on 225% maximum plus 100% of the rated load amps for all loads included in the circuit, per circuit, per UL 1995
Fig 36.2.
6. The INCOMING WIRE RANGE is the minimum and maximum wire size that can be accommodated by the unit wiring lugs. The (1), (2),
(3), or (4) preceding the wire range indicates the number of termination points available per phase of the wire range specified. The (1 -2)
preceding the wire range indicates that a single double-barreled lug is available per phase that can accept up to two wires of the wire range
specified. (1) #1-600MCM OR (2) #1-250MCM indicates that a single lug is supplied and it will accept a single wire up to 600MCM or 2
wires up to 250MCM. Actual wire size and number of wires per phase must be determined based on ampacity and job requirements using
N.E.C. wire sizing information. The above recommendations are based on the National Electrical Code and using copper connectors only.
Field wiring must also comply with local codes.
7. A ground lug is provided for each compressor system to accommodate field grounding conductor per N.E.C. Article 250-54. A control circuit
grounding lug is also supplied. Incoming ground wire range is #6 - #2/0.
UNIT POWER SUPPLY INCOMING WIRE RANGE6SYS. 1 COMPR.
MODEL MAX SIZE
YCA MCA1DUAL ELEM DISC CKT BKR PW ACL YORK SUPPLIED NON-FUSED ACL/ PW/
FUSE SIZE MIN 4HACR START START DISCONNECT (OPTIONAL) RLA LRA LRA
MIN 2MAX 3TYPE 5
Z33BA3 -17 274 350 350 400 350 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 112 582 368
Z33BA3 -28 237 300 300 400 300 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 97 506 320
Z33BA3 -46 119 150 150 200 150 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 48.5 253 160
Z33BA3 -58 95 125 125 200 125 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 38.8 202 128
Z44BA3 -17 319 400 450 400 450 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 132 674 414
Z44BA3 -28 276 350 350 400 350 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 114 586 360
Z44BA3 -46 138 175 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 57 293 180
Z44BA3 -58 110 150 150 200 150 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 45.6 234 144
Z74BB3 -17 353 450 500 400 500 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 159 741 582
Z74BB3 -28 306 350 400 400 400 (2)#4-250MCM N/A (1) #1-600MCM OR (2) #1-250MCM 138 644 506
Z74BB3 -46 153 200 200 200 200 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 69 322 253
Z74BB3 -58 122 150 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 55 258 202
Z77CB3 -17 380 450 500 600 500 (2)#4-250MCM N/A (1-2) #2/0-500MCM 159 741 582
Z77CB3 -28 330 400 450 400 450 (2)#4-250MCM NM (1) #1-600MCM OR (2) #1-250MCM 138 644 506
Z77CB3 -46 165 200 225 200 225 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 69 322 253
Z77CB3 -58 131 175 175 200 175 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 55 258 202
Z88DB3 -17 468 6W 600 600 600 (2)#4-250MCM NM (1-2) #2/0-500MCM 198 880 675
Z88DB3 -28 406 500 500 600 500 (2)#4-250MCM NM (1-2) #2/0-500MCM 172 765 587
Z88DB3 -46 203 250 250 250 250 (2)#4-250MCM (2)*4-250MCM (1) #6-350MCM 86 383 294
Z88DB3 -58 162 200 225 200 225 (2)#4-250MCM (2)#4-250MCM (1) #6-350MCM 68.8 306 235
ELECTRICAL DATA
