VOLTAGE DROP CALCULATION LEGEND

ROUTER TO FEEDER ACTUAL FLC SIZE VOLTAGE

VOLTAGE RECEIVING WIRE DISTANCE R @ 75 ° VD % VD @ MARK DESCRIPTION
FROM TO RATINGS (AMP) (mm²) RECEIVING

SYS PANEL 230 57.94 14 20.00 1.671 3.872 1.68 230 PL-18WNW

PL-4WDL

VOLTAGE DROP COMPUTATION

VD = SINGLE PHASE X LENGTH X RESISTANCE X I PL-4WNW

SE. CAP 2- 14.0 mm2 THW cu. wire (BLACK) = 2 X 20 X 1.671 X 57.94
1-14.0mm2 THW cu. wire (WHITE) 1000 PL-12WDL
32mm Ø RSC
ELECT. SOURCE
VD = 3.872 VOLTS
PL-6WDL
M %VD = 3.872
230 x 100
SM-LED
PL-6WNW
%VD = 1.68%
l PEC ALLOWS UP TO 2% VOLTAGE DROP FOR FEEDER. PL-8WNW
1 2
HENCE, ALL RESULT FROM THE CALCULATIONS ARE
3 4
ACCEPTABLE. PL-12WNW
FAULT CALCULATIONS
5 6
(BY POINT TO POINT METHOD) S

7 8 TO BLCI TO DLPC TRANSFORMER

TRANSFER S2A
AT 50 KVA, 240V, 1Ø, 60Hz TRANSFORMER
9 10
TRANSFORMER
FAULT
SHORT CIRCUIT CURRENT = 23,706A

PANEL L = 20m OR 65.62 ft.

GROUND "f" factor FAULT CURRENT @ PANEL

GIVEN: ISC = 23, 706A WP
f = 2xLxIL-L
C = 2425 (FOR 14mm2 CU. WIRE)
RISER DIAGRAM CxnxEL-L
NTS "M" factor ACU
SCALE
M= 1 f = 2xLxIL-L
1+ f CxnxEL-L WM
FIRST 10,000 W AT 100 % (df) = 10000 W USE: WHERE: f = 2x65.62x23,706
2 - 14mm2 THW cu. wire (BLACK) L = LENGTH (FT.) OF THE
12,020 - 10,000 = 2,020 W 2425x1x230
PB
2,020 AT 40% (df) = 808 W 1 - 14mm2 THW cu. wire (WHITE) CONDUCTOR TO THE FAULT
M= 1 00
2 UNIT ACU AT 100% (df) 2P 63AT/63AF CB C = CONSTANT OF THE PB
1+ 5.578
2 x 119 = 2238 CONDUCTORS
M = 0.152
n = NUMBER OF CONDUCTORS
TOTAL = 13, 046 W ISC @ PANEL = 23,706 x 0.152
PER PHASE
If = 13, 046 + 0.25 (1119) I = AVAILABLE SHORT-CIRCUIT ISC SYM RMS= 3,603 A M
230 CURRENT IN AMPERES THEREFORE,
IT = 57.94 A E = VOLTAGE OF CIRCUIT USE 4.5 KAIC MINIMUM FOR CIRCUIT BREAKER TELEPHONE OUTLET
T

CABLE TV OUTLET
CATV

NOTE
65.19 A ALL ARCHITECTURAL PLANS SHALL PREVAIL
OVER ALL ENGINEERING PLANS WITH REGARDS
TO DIMENSIONS, ANY DISCREPANCIES FOUND
SCHEDULE OF LOADS HEREIN SHALL BE VERIFIED WITH THE
ARCHITECT.
SCALE NTS

CERTIFIED BY: PRC No. PROJECT TITLE: APPROVAL: SHEET CONTENT: REVISIONS: SHEET NO.:
VALIDITY
PTR No.
ISSUED AT
TWO-STOREY E-1
ISSUED ON RESIDENTIAL BUILDING ELECTRICAL NOTES
TIN OWNER
12 17
ISSUED AT LOCATION: PUROK 2, AGSO, TALISAY, ANDA, BOHOL NO. DESCRIPTION DATE