when we r using 3.5 cable for a bldg. and put laod on each
phase using the neutral and neutral is the return paht for
the phase so the current of the neutral must be Ir+Ib+iY
(return).But the size of the netural is .5 as comper to the
phase.
Answers were Sorted based on User's Feedback
Answer / k.p.sharma
IN 3PH. NEUTRAL CARRIES ONLY UNBALANCE CURRENT MEANS IF ALL
PHASE ARE CARRYING SAME FOR EXAMPLE 20AMPS THEN CURRENT IN
NEUTRAL WILL BE ALMOST ZERO AMPS.
Is This Answer Correct ? | 11 Yes | 0 No |
Answer / saireen
3.5 c cable neutral is not the return path for the face but only that current which r unbalance among 3 phase, and that is sufficient to keep size 1\2 as compare to phase.
Is This Answer Correct ? | 0 Yes | 0 No |
which calss ct's,pt', use protection,meatering and others
What is the difference between AVR and Servo Stabliser
I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?
What is the emf equation of a transformer?
A 230V, 60W bulb when connected to 230v supply what current and power will consume, if same bulb is connected to 200v what purrent and power will consume?
10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.
Maintenance of transformer???
Define heating time constant of electric motor.
What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?
Why indicated only R.Y.B to phase.
where the Motorized mccb to be used? In Motor control center panel starters ,it is use full. please answer
how is working the auto transformer?