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ROBISON
<br /> ENGINEERING, INC
<br /> 19401 40TH AVE W.,SUITE 302
<br /> LYNNWOOD,WA 98036
<br /> 206364-3343 TEL
<br /> CONTACT:TYLER BEAM
<br /> QROFESS/pN
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<br /> w No. E-21545 m
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<br /> FAULT U S SCHEDULE
<br /> DEVICE FAULT AIC L-N UTILITY FED FROM FEEDER T ANSFORM qTF OF CA��F��
<br /> RATING VOLTS Seal
<br /> FAULT DEVICE FAULT SIZE LENGTH KVA
<br /> XFMR 47,139 65,000 120V 46,659 500
<br /> bp
<br /> MSB-1 22,700 35,000 120V 22,214 XFMR 46,659 (5)#600kcmil 321 VOLTAGE DROP SCHEDULE
<br /> CW-L 19,106 22,000 120V 18,761 MSB-1 22,214 (3)#400kcmil 60'
<br /> CW-T 5,651 10,000 277V 5,581 CW-L 18,761 (3)#300kcmil 5-0" 300 DEVICE FEEDER BRANCH CIRCUIT TOTAL
<br /> CW-H 5,622 10,000 277V 5,553 CW-T 5,581 #350kcmil 5-0" VOLTAGE DROP WIRE MAX VOLTAGE DROP WIRE VOLTAGE DROP
<br /> MSB-2 21,294 22,000 120V 20,808 MSB-1 22,214 (3)#400kcmil 19' SIZE SIZE
<br /> UNITIZED AL XFMR 0% - - 0%
<br /> PANEL
<br /> SYSTEM MS13-1 1.34% (5)#600kcmil - - 1.34%
<br /> A 20,525 22,000 120V 20,075 MSB-2 20,808 #3/0 3'-0" CW-L 1.35% (3)#400kcmil 1.85% (CKT 1) #12 3.19%
<br /> UNITIZED
<br /> PANEL CW-T 1.35% (3)#300kcmil - - 1.35%
<br /> SYSTEM
<br /> CW-H 0% #350kcmil - - 0%
<br /> B 20,523 22,000 120V 20,075 MSB-2 20,808 #3/0 3'-0" MSB-2 1.56% (3)#400kcmil - - 1.56%
<br /> UNITIZED UNITIZED AL
<br /> PANEL
<br /> SYSTEM PANEL J
<br /> SYSTEM
<br /> Q
<br /> C 20,536 22,000 120V 20,075 MSB-2 20,808 #3/0 3'-0" A 1.6% #3/0 2.74% (CKT 3) #10 4.34% ~
<br /> UNITIZED
<br /> PANEL B 1.59% #3/0 2.61% (CKT 17) #12 4.19% m
<br /> SYSTEM U'
<br /> G 20,187 22,000 120V 19,721 MSB-2 20,808 #1 3'-0" C 1.6% #3/0 2.19% (CKT 11,13,15) #10 3.79% z a-
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<br /> UNITIZED G 1.59% #1 1.95% (CKT 1,3) #12 3.55% w o
<br /> SYSTEM L 1.58% #1 2.06% (CKT 12) #4 3.65%PANELz
<br /> 0
<br /> L 20,155 22,000 120V 19,721 MSB-2 20,808 #1 3'-0" QSR 1.35% (3)#400kcmil 0.07% (CKT 1) #12 1.41%
<br /> UNITIZED AL
<br /> PANEL J
<br /> SYSTEM P1 1.35% #3/0 0.85% (CKT 1) #12 2.2% Q
<br /> z
<br /> QSR 18,979 22,000 120V 18,638 MSB-1 22,214 (L)#400kcmil 53'
<br /> A
<br /> LU
<br /> CV
<br /> o P1 17,356 22,000 120V 17,071 QSR 18,638 #3/0 8'-0" o
<br /> U CD
<br /> co ARC- FLASH SCHEDULE < < < < < < < <
<br /> N DEVICE REQUIRED VOLTAGE INCIDENT WORKING ARCING CURRENT ARCING TIME ARC-FLASH-PROTECTION
<br /> V, PPE ENERGY DISTANCE BOUNDARY
<br /> (J/CM2) (MM) 100% 85% ® 100% ® 85%
<br /> M ARCING ARCING ENERGY DISTANCE
<br /> 3 CURRENT CURRENT (J/CM2) (MM)
<br /> (SECONDS) (SECONDS)
<br /> XFMR 4 208V 164.33 457 12,868 10,938 0.9 0.9 5.02 3,831
<br /> MSB-1 4 208V 157.43 457 7,710 6,553 1.5 1.5 5.02 3,732 0 LU
<br /> 0 �
<br /> CW-L 3 208V 73.68 457 6,832 5,808 0.8 0.8 5.02 2,350 U . W M
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<br /> CW-T 3 480V 103.84 457 4,021 3,418 2 2 5.02 2,896 W O Q L.6
<br /> CW-H 1 480V 0.83 457 4,003 3,403 0.02 0.02 5.02 152 u = Q
<br /> MSB-2 4 208V 109.98 457 7,372 6,266 1.1 1.2 5.02 2,999 0 Q
<br /> N UNITIZED Q 0 (�
<br /> w PANEL J
<br /> o 3
<br /> SYSTEM Q
<br /> O 0
<br /> A 1 208V 1.56 457 7,184 6,107 0.02 0.02 5.02 224
<br /> 00
<br /> 3 _ LJJ W W
<br /> B 1 208V 1.56 457 7,184 6,106 0.02 0.02 5.02 224 Ae
<br /> U C 1 208V 1.56 457 7,187 6,109 0.02 0.02 5.02 224 U U Q
<br /> 0 C z G 1 208V 1.54 457 7,101 6,036 0.02 0.02 5.02 222
<br /> a
<br /> o L 1 208V 1.53 457 7,093 6,029 0.02 0.02 5.02 222 W Q
<br /> U
<br /> w QSR 3 208V 91.64 457 6,801 5,780 1 1 5.02 2,684 CO
<br /> m P1 1 208V 1.37 457 6,387 5,429 0.02 0.02 5.02 207
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<br /> N FAULT CURRENT &
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<br /> ARC FLASH
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<br /> SCHEDULES
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