IN THIS ARTICLE YOU ARE GOING TO KNOW ABOUT WIRE SIZING & MCB SELECTION FOR THREE-PHASE BUILDING
WE PRETTY MUCH SURE YOU WILL NOT HAVE PATIENCE OF SCROLLING 24 PAGES OF CALCULATION SO WE CUT TO SHORT. YOU CAN FIND FORMULA BELOW FOR CALCULATING SIZE OF MCB
.
IF YOU HAVE PATIENCE PLEASE GO FOR IT, SCROLL DOWN. YOU WILL GET MORE INFO OF CALCULATING MCB FOR A HOUSE AND MAY BE A CHART TABLE FOR SIZING WIRE
ALSO USE: MCB CALCULATOR | BREAKER SIZE CALCULATOR
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LIVING ROOM CALCULATION
Led tubelight of 40 watts
Spot light = 4 nos
Ceiling fan = 2 nos
Tv = 1 nos
Utility socket = 3 nos .
WATTS CALCULATION FOR LIVING ROOM
1 SOCKET OF 6 AMPS
Amps To Watts
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320 Watts
2 SOCKETS OF 15 AMPS
Watts = Amps x Voltage (220 India)
Watts = 15 x 220 = 3300
Watts = 2 Nos of sockets x 1320 = 6600 Watts
AMPS CALCULATION FOR LIVING ROOM
As per the note, this building is fully connected with the three-phase system
.
MCB SELECTION FOR LIVING ROOM
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KITCHEN & DINING ROOM CALCULATION
Led Tubelight = 1 Nos
Spot Light = 4 Nos
Fridge Socket = 1 Nos
Chimney = 1nos
Utility Socket = 2 Nos
WATTS CALCULATION FOR KITCHEN & DINING
MUST READ: Basic
Guide of Electrical House Wiring
FRIDGE SOCKET
Fridge Wattage = 2400 Watts Per Day
So, we can use 15 amps socket which can withstand 3300 watts (220 x 15)
Fridge socket (15 Amps) Watts = 3300 Watts
2 SOCKETS OF 15 AMPS
Watts = Amps x Voltage (220 India)
Watts = 15 x 220 = 3300
Watts = 2 Nos of sockets x 1320 = 6600 Watts
AMPS CALCULATION FOR KITCHEN & DINING
As per note, this building is fully connected with the three-phase system
.
.
MCB SELECTION FOR KITCHEN & DINING ROOM
.
BEDROOM 1 CALCULATION
Led Tubelight = 1 Nos
Spot Light = 4 Nos
Ceiling Fan = 1 Nos
T.L Socket = 2 Nos
Utility Socket = 3 Nos
A.C = 1 Nos
WATTS CALCULATION FOR BEDROOM 1
1 SOCKET OF 6 AMPS
Amps To Watts
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320 Watts
2 TV SOCKETS OF 6 AMPS
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320
Watts = 2 Nos of sockets x 1320 = 2640 Watts
2 SOCKETS OF 15 AMPS
Watts = Amps x Voltage (220 India)
Watts = 15 x 220 = 3300
Watts = 2 Nos of sockets x 3300 = 6600 Watts
AMPS CALCULATION FOR BEDROOM 1
As per note this building is fully connected with the three-phase system
.
MCB SELECTION FOR BEDROOM 1
.
BEDROOM 2 CALCULATION
Led Tubelight = 1 Nos
Ceiling Fan = 1 Nos
T.L Socket = 1 Nos
Utility Socket = 3 Nos
WATTS CALCULATION FOR BEDROOM 2
1 SOCKET OF 6 AMPS
Amps To Watts
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320 Watts
1 TV SOCKETS OF 6 AMPS
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320
Watts = 2 Nos of sockets x 1320 = 1320 Watts
2 SOCKETS OF 15 AMPS
Watts = Amps x Voltage (220 India)
Watts = 15 x 220 = 3300
Watts = 2 Nos of sockets x 3300 = 6600 Watts
AMPS CALCULATION FOR BEDROOM 2
As per note, this building is fully connected with three phase system
MCB SELECTION FOR BEDROOM 2
.
BATHROOM CALCULATION
Led Light = 1 Nos
Spot Light = 1 Nos
Utility Socket = 2 Nos
Geyser = 1 Nos
Exhaust Fan = 1 Nos
WATTS CALCULATION FOR BATHROOM
2 SOCKETS OF 6 AMPS
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320
Watts = 2 Nos of sockets x 1320 = 2640 Watts
AMPS CALCULATION FOR BATHROOM
As per note, this building is fully connected with the three-phase system
.
MCB SELECTION FOR BATHROOM
.
PASSAGE CALCULATION
Spot Light = 3 Nos
Utility Socket = 2 Nos
WATTS CALCULATION FOR BATHROOM
2 SOCKETS OF 6 AMPS
Watts = Amps x Voltage (220 India)
Watts = 6 x 220 = 1320
Watts = 2 Nos of sockets x 1320 = 2640 Watts
AMPS CALCULATION FOR BATHROOM
As per note, this building is fully connected with the three-phase system
.
MCB SELECTION FOR PASSAGE
BELOW YOU ARE GOING TO FIND WIRE SIZING FOR EACH MCB
WIRE SIZING FOR MCB
..
ALSO
READ: HOW
TO CHOOSE THE RIGHT MCB BREAKER CURRENT RATING
ALSO
READ: LOAD
RATINGS OF USUAL HOUSEHOLD APPLIANCES | AMPS AND WATTS RATINGS
Must
read: What
Tests Should Be Carried Out on Electrical Installation?
Must
read: All
You Want Know about Wiring of Buildings
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Some dout are there. In this topic how can I ask you.
ReplyDeleteSome dout are there. In this topic how can I ask you.
ReplyDeleteyou can send us message
DeleteHow much Total length of cable sir
ReplyDeleteCan we combine LL and PL mcb
ReplyDeleteWHILE CALCULATING AMPS = WATT X DF/VOLT(1.732). WHAT/WHY THIS 1.732?
ReplyDeleteIn a 3-phase system the voltage between any two phases is 3 times higher than the voltage of an individual phase by a factor of 1.73 (square root of 3 to be exact). ... A 220V system with three 220V phases has a 220 * 1.73 = 380V cross-phase voltage.
DeleteYour calculation is Confused. You have used 3-Phase formula to get the total current (Amps) on Single phase.
ReplyDeletegreat idea but really confusing.
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