ES-601A_-_FEEDER_SCHEDULE(4-25-2016).pdf

FY13 CE SHOP CONSOLIDATION PH ‐ I, THULE AIR FORCE BASE, GREENLAND (CU)

FEEDER AND VOLTAGE DROP CALCULATION AND SIZING ‐ FROM RELOCATED SUB 7580 TO BLDG.630 & SERVICE STATION

PANEL / LOAD ID

FED FROM PNL &

CKT

DEMAND

LOAD (VA) VOLTAGE (V) PHASE

LOAD

Amp (A) CKT BKR PF

CU

FEEDER SIZE

(AWG)

CU

GND COND

(AWG)

(CU COND)

NO OF SET LENGTH (M)

CABLE

LENGTH (FT) CABLE TYPE CONDUIT SIZE FEEDER SCHEDULE TABLE (IMPERIAL) REMARKS

SHORT CKT CHECK

(SCCR MIN RATING)

SUBST 7517 SUBST 7517 SEC = 208 NOM IMPEDANCE = 5.68%Z

XFMR 300,000 PRI = 4160 3 41.7 60 0.90 2/0 2/0 1 700 2,764 MV_105 4" 3‐#2/0 + 1‐#2/0 GND TRANSF IMPEDANCE ASSUMED FOR EXIST BLDG. MIN I(SC) RATING = 16,304A

PNL630 SUBST 7517

XFMR 115,200 208 3 319.8 400 0.90 750 4/0 2 110 451 MC_HL 4" 2 SETS OF 4‐#750 + 1‐#4/0 GND MIN I(SC) RATING = 8,032A

PNL "J" PNL630

57,600 208 3 159.9 200 0.90 4/0 4/0 1 10 41 THHN 4" 4‐#4/0 + 1‐#4/0 GND PNL "J" LOAD CAPACITY (200A) IS ASSUMED. MIN I(SC) RATING = 6,897A

SERVICE STN 631 PNL630 EMT EXIST SERVICE FROM PNL "J" AT B.630

27,500 208 3 76.3 100 0.90 2/0 4/0 1 62 254 THHN 4" 4‐#2/0 + 1‐#4/0 GND IN 4"C EMT USING EXISTING INSTALLATION. FOR REF ONLY. MIN I(SC) RATING = 3,112A

FEEDER AND VOLTAGE DROP CALCULATION AND SIZING ‐ FROM NEW SUB 7412 TO NEW CE SHOP

SUBST 7412 SUBST 7412 SEC = 208 NOM IMPEDANCE = 5.68%Z

XFMR 750,000 PRI = 4160 3 104.2 150 0.90 4/0 4/0 1 700 2,764 MV_105 4" 3‐#4/0 + 1‐#4/0 GND TRANSF IMPEDANCE ASSUMED MIN I(SC) RATING = 40,760A

PNL DPL1 SUBST 7412

SWITCHBD 86,911 208 3 241.2 400 0.90 750 4/0 1 45 185 MC_HL 4" 4‐#750 + 1‐#4/0 GND MIN I(SC) RATING = 13,121A

PNL DPL2 SUBST 7412

SWITCHBD 136,226 208 3 378.1 800 0.90 750 4/0 2 45 185 MC_HL 4" 2 SETS OF 4‐#750 + 1‐#4/0 GND MIN I(SC) RATING = 19,851A

PNL DPL3 SUBST 7412

SWITCHBD 196,719 208 3 546.0 800 0.90 750 4/0 4 120 453 MC_HL 4" 4 SETS OF 4‐#750 + 1‐#4/0 GND MIN I(SC) RATING = 17,783A

FIRE PUMP SUBST 7412

SWITCHBD 67,562 208 3 187.5 1,200 0.85 350 4/0 4 55 226 MC_HL 4" 4 SETS OF 4‐#350 + 1‐#4/0 GND SERVICE SIZED BASED ON LRC PER NEC MIN I(SC) RATING = 22,131A

FEEDER AND VOLTAGE DROP CALCULATION AND SIZING ‐ FROM EXIST SUB 7580 TO HTC7014 AND HTC7004

SUBST 7580 SUBST 7580 SEC = 208 NOM IMPEDANCE = 5.68%Z

XFMR 500,000 PRI = 4160 3 69.5 90 0.90 2/0 4/0 1 700 2,764 MV_105 4" 3‐#2/0 + 1‐#4/0 GND TRANSF IMPEDANCE ASSUMED FOR EXIST BLDG. MIN I(SC) RATING = 27,173A

PNL 7014 (EXIST) SUBST 7580

SWBD HTC7014 8,000 208 3 22.2 50 0.90 500 4/0 2 380 1,558 MC_HL 4" 2 SETS OF 4‐#500 + 1‐#4/0 GND SEE NOTE 4 BELOW MIN I(SC) RATING = 3,574A

PNL 7004 (EXIST) SUBST 7580

SWBD HTC7004 29,000 208 3 80.5 125 0.90 500 4/0 2 365 1,497 MC_HL 4" 2 SETS OF 4‐#500 + 1‐#4/0 GND SEE NOTE 5 BELOW MIN I(SC) RATING = 3,701A

FEEDER SCHEDULE NOTES:

1A. NOTES FOR SERVICE STATION B.631: DESIGN ASSUMED BLDG.631 LOAD IS 100A SERVICE. CONTRACTOR SHALL VERIFY WITH EXISTING SITE CONDITION. IF REQUIRED, UPSIZE SERVICE CAPACITY AND FEEDER SIZE AT NEW PANEL PNL630 TO ACCOMMODATE ADDITIONAL LOAD.

1B. NOTES FOR SERVICE STATION B.631: CALCULATION SHOWN FOR REFERENCE ONLY. CONTRACTOR SHALL REUSE EXISTING SERVICE FEEDER FROM PNL "J".

2. NOTES FOR BLDG.630: NEW PANEL PNL630 SHALL BE INSTALLED AHEAD OF THE EXISTING SERVICE PANEL PNL "J", AFTER DEMOLITION OF EXISTING SERVICE FEED FROM BLDG. 629. SEE DWG ES‐102A FOR WORK FLOW.

3. ALL SHORT CIRCUIT VALUES COMPUTED ARE BASED ON THE ASSUMED IMPEDANCE VALUE OF THE RESPECTIVE SUBSTATION. SHOULD ACTUAL IMPEDANCE BE KNOWN, THE MINIMUM SHORT CIRCUIT CAPACITY SHALL BE RE‐EVALUATED AND EQUIPMENT AMPACITY RATING SHALL BE SELECTED ACCORDINGLY.

4. NOTES FOR BLDG. HTC7014 (EXISTING): ASSUME TOTAL LOAD FOR BLDG IS 5 HEAT TRACE PANELS (@1400W EA) & MISC BLDG LOADS (1000W). SERVICE IS FED FROM SUB.7580 (EXISTING). INFO IS PROVIDED FOR REFERENCE ONLY. (NO NEW WORK)

5. NOTES FOR BLDG. HTC7004 (WITH RELOCATED FEEDS): ASSUME TOTAL LOAD FOR BLDG IS 20 HEAT TRACE PANELS (@1400W EA) & MISC BLDG LOADS (1000W). FEED SHALL BE PROVIDED FROM SUB.7580. SEE ES‐102B FOR ROUTING.