i work as a technician at a private company.. i used to take
amp reading for certain appliances such as air con.. the
problem is when i clamp the neutral, wire there is a current
reading.. from my understanding for single phase system
neutral should not have current unless if the circuit is not
complete.. yet the air con still work
Answer Posted / pillay
your understanding is wrong or if not
incomplete.
In any single phase circuit the neutral
is the return path
for the circuit. That means the current that
flows into the phase comes out through the neutral
Even in 3 PH balanced load you will see the
same individual ph current in the neutral but
you will see no current in the main neutral,
cos at the neutral bar the individual neutral
current had balanced up through the other phases.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
how to calculate the Neutral transformer impedance?
how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?
Classify milling machines.
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?
Define ohm’s law for a.c (alternating current)?
i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
what is the clear formula to calculate cable size for a load
What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.
Explain using drawings what is reverse PID action w.r.t PID controllers.
How Can you do Maintenance of ACB of 2000Amperes
what is through fault?
what is the ms flat constant for calculating earth mat design calculation?