GROUND FLOOR MAIN PANEL BOARD MAIN BREAKER 125 AT CB, 2 POLE 30 SQ MM 54 MM CU THHN PVC CONDUIT REFRIGERATOR CO. 15 AMP 15 AMP LIVING AREA 15 AMP TV CABLE SE 15 AMP FRONTYARD L CARPORT LO 15 AMP 10 AMP LIVING AREAL Q Q O Q SECOND FLOOR PANEL BOARD - 1 MAIN BREAKER 60 AT CB, 2 POLE 8 SQ MM CU THHN 25 MM PVC CONDUIT 2 CARPORT W.P LAUNDRY W.P KITCHEN W.P BEDROOM 1 (4 10 AMP 10 AMP ACU T&B 1W.P STAIRS LO. KITCHEN LO 14) T&B 1LO DINING AREA LO. SECOND FLOOR BEDROOM 2 6 10 AMP 10 AMP ACU MASTER BEDROOM 3 са BEDROOM CO C 10 AMP 10 AMP BALCONY 1 LO THIRD FLOOR 10 AMP AMP SPARE BEDROOM 1L017 10 AMP AMP ENTERTAINMENT ROOM 1 LC Q Q THIRD FLOOR PANEL BOARD - 2 MAIN BREAKER 60 AT CB, 2 POLE 8 SQ MM CU THHN 25 MM PVC CONDUIT W TOP S MASTER T&B 3 W.P 5 BEDROOM 4 9 ACU T&B 2 W.P O ENTERTAINMENT ROOM 1 TV CABLE SET BEDROOM 3 ACU E STAIRS LO. MASTER BR 3L.0. 16 MASTER T&B 3 LO. T&B 2 LO. WATERPROOF OUTLET CONVENIENCE OUTLET SPARE 13 10 AMP 10 AMP P 10 AMP 10 AMP оо ୦ 10 AMP 10 AMP BALCONY 2 LO BEDROOM 3 L. (19 BEDROOM 4L.O. 10 AMP 10 AMP Q о O 10 T&B 4W.P (12) TV CABLE SET O 18 STAIRS LO BR 3 LO. T&B 4 LO. WCS 20 OUTDOOR CELING LO. TOTAL AMPERES = 91.99 A IP = (91.99 x 100% ) + (25% x 8) = 93.99 A FEEDER CURRENT = 93.99 x 125% = 117.49 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 60 A HIGHEST MOTOR FL CURRENT = 8.00 A SUM OF REMAINING CURRENT 8.00 TOTAL AMPERES = 32.6 A IP = (32.6 x 100%) + (25% x 8) = 34.6 A FEEDER CURRENT = 34.6 x 125% = 43.25 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 20 A HIGHEST MOTOR FL CURRENT = 8.00 A = 91.99 - SUM OF REMAINING CURRENT = 32.6-8.00 = 24.6 A TOTAL AMPERES = 37.82 A IP = (37.82 x 100% ) + ( 25 % x 8) = 39.82 A FEEDER CURRENT = 39.82 x 125 % = 49.78 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 20 A HIGHEST MOTOR FL CURRENT SUM OF REMAINING CURRENT = 8.00 A = 37.82 - 8.00 = 29.82 A = 83.99 A APPLY DEMAND FACTOR = 24.6 x 125% APPLY DEMAND FACTOR = 83.99 = 30.75 A APPLY DEMAND FACTOR 125% = 29.82 x X 125% = 37.28 A = 104.99 A

GROUND FLOOR MAIN PANEL BOARD MAIN BREAKER 125 AT CB, 2 POLE 30 SQ MM 54 MM CU THHN PVC CONDUIT REFRIGERATOR CO. 15 AMP 15 AMP LIVING AREA 15 AMP TV CABLE SE 15 AMP FRONTYARD L CARPORT LO 15 AMP 10 AMP LIVING AREAL Q Q O Q SECOND FLOOR PANEL BOARD - 1 MAIN BREAKER 60 AT CB, 2 POLE 8 SQ MM CU THHN 25 MM PVC CONDUIT 2 CARPORT W.P LAUNDRY W.P KITCHEN W.P BEDROOM 1 (4 10 AMP 10 AMP ACU T&B 1W.P STAIRS LO. KITCHEN LO 14) T&B 1LO DINING AREA LO. SECOND FLOOR BEDROOM 2 6 10 AMP 10 AMP ACU MASTER BEDROOM 3 са BEDROOM CO C 10 AMP 10 AMP BALCONY 1 LO THIRD FLOOR 10 AMP AMP SPARE BEDROOM 1L017 10 AMP AMP ENTERTAINMENT ROOM 1 LC Q Q THIRD FLOOR PANEL BOARD - 2 MAIN BREAKER 60 AT CB, 2 POLE 8 SQ MM CU THHN 25 MM PVC CONDUIT W TOP S MASTER T&B 3 W.P 5 BEDROOM 4 9 ACU T&B 2 W.P O ENTERTAINMENT ROOM 1 TV CABLE SET BEDROOM 3 ACU E STAIRS LO. MASTER BR 3L.0. 16 MASTER T&B 3 LO. T&B 2 LO. WATERPROOF OUTLET CONVENIENCE OUTLET SPARE 13 10 AMP 10 AMP P 10 AMP 10 AMP оо ୦ 10 AMP 10 AMP BALCONY 2 LO BEDROOM 3 L. (19 BEDROOM 4L.O. 10 AMP 10 AMP Q о O 10 T&B 4W.P (12) TV CABLE SET O 18 STAIRS LO BR 3 LO. T&B 4 LO. WCS 20 OUTDOOR CELING LO. TOTAL AMPERES = 91.99 A IP = (91.99 x 100% ) + (25% x 8) = 93.99 A FEEDER CURRENT = 93.99 x 125% = 117.49 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 60 A HIGHEST MOTOR FL CURRENT = 8.00 A SUM OF REMAINING CURRENT 8.00 TOTAL AMPERES = 32.6 A IP = (32.6 x 100%) + (25% x 8) = 34.6 A FEEDER CURRENT = 34.6 x 125% = 43.25 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 20 A HIGHEST MOTOR FL CURRENT = 8.00 A = 91.99 - SUM OF REMAINING CURRENT = 32.6-8.00 = 24.6 A TOTAL AMPERES = 37.82 A IP = (37.82 x 100% ) + ( 25 % x 8) = 39.82 A FEEDER CURRENT = 39.82 x 125 % = 49.78 A FOR OVERCURRENT DEVICE HIGHEST CIRCUIT BREAKER RATING = 20 A HIGHEST MOTOR FL CURRENT SUM OF REMAINING CURRENT = 8.00 A = 37.82 - 8.00 = 29.82 A = 83.99 A APPLY DEMAND FACTOR = 24.6 x 125% APPLY DEMAND FACTOR = 83.99 = 30.75 A APPLY DEMAND FACTOR 125% = 29.82 x X 125% = 37.28 A = 104.99 A

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 8RQ

See similar textbooks