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


Please Help Members By Posting Answers For Below Questions

What is the selection process of breakers. Can any one please give a formulation on same?

1689


What is the difference between isolators and electrical circuit breakers?

632


What are the electrical engineer roles and responsibilities in chemical plant?

1140


when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

1528


Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

1650






What is routh hurwitz stability criterion?

659


what is the function of bearing in dc mchine" and where it is placed

2081


How we can calculate the life of Lead acid battery

1320


what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

1760


'documenˁ

1526


how to get electrical supervisour certificate in gujarat

1536


How DC earth leakage currents can be reduced ?

1476


I have 1500/1A CT If i connect this CT in 6.6KV bus bar means what will be the voltage present in CT?

1592


Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

1648


i am going to attaned the engineer (disign)iterview at HAL please give me duid line

1781