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Question
In case of 3Phase Supply, 
   Voltage R-Earth/Neutral  -  220
           Y-Earth/Neutral  -  220
           Z-Earth/Neutral  -  220
   Total is ->   660Volts

Then Why it is said that 3Phase supply is 440
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
this voltage measure in R-Y 440v Y-B 440v RB-440 v so this
said that 3 phase R-Y-B supply is 440 v
 
Is This Answer Correct ?    15 Yes 3 No
Sachin Mahangade
 
Answer
# 2
we are calculating in phase to pase oly , so r-y, y-b, b-r
is 440 volt
 
Is This Answer Correct ?    13 Yes 2 No
Jmdt
 
 
 
Answer
# 3
in three phase supply there are three phases (here R, y,
and z) and only one neutral.
the voltage between any one phase and neutral is 220.
and the voltage between remaining two phases is 440.hence
the 3 phase supply is 440
 
Is This Answer Correct ?    3 Yes 1 No
Zubair
 
Answer
# 4
If we measure R-Earth/ Neutral that is 1 PH. 3 Phase, 440V
means we have to measure Phase - Phase i.e. R-Y, Y-B, R-B
 
Is This Answer Correct ?    2 Yes 4 No
Padmavathi
 
Answer
# 5
the vole meter have 2 terminals only.... then how can we
mesure in 3 phase voltage... only chance mesure in 2 phases
only the 2 phase voltage 440
 
Is This Answer Correct ?    2 Yes 4 No
Vinoth
 
Answer
# 6
220 Multiply by root three is equal to 281.4 volts. for 440
volts single phase voltage up to 254 volts.
 
Is This Answer Correct ?    1 Yes 6 No
N
 

 
 
 
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