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# USAFlow of current in a neutral wire

Discuss Flow of current in a neutral wire in the American Professional Electrical Advice Forum area at ElectriciansForums.net

#### timberfinn

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DIY
I am taking this HVAC class and have been studying up on the basics of electricity, magnetic induction, AC/DC, Ohms Law etc. I have a basic question concerning the flow of current in the neutral wire of a single phase 120v circuit. I ran a few questions by my instructor (Mr. Samuels). He was a tech on a nuclear sub for 7 years. He checked out the internet for answers to my questions since he admitted to me that he was stumped. What he showed me from the internet was actually lame ... did not address my questions. One of the questions was that I noticed that Ohms Law seems to contradict Kirchoffs Law in that there is the same amount of amps in all parts of a series circuit (Kirchoffs Law) but typically a voltmeter shows zero voltage in the neutral wire of the circuit going to ground. Ohms law states that Amps = volts divided by resistance. Obviously, if there are zero volts, per the meter, then amps should be zero also. But that is not the case. There are always amps per Kirchoff's Law. But common sense tells us that you cannot have current flow (amps) without pressure (volts). Mr. Samuels is stumped. He asked the master electrician for the whole compound, a Mr. Sword. Apparently Mr. Sword was stumped too. Several inquires by Samuels to different websites/blog sites have failed to answer my question as well. The question being "How can you have significant amps (per the amp meter) in the neutral wire of a single phase 120v circuit and yet have zero volts/pressure (per the volt meter) pushing that current. Mr. Samuels has said that he could not disagree with me but could give me an answer. Also if there is zero voltage at the end of the load, what powers another device if you add one in series?

Any help would be appreciated.

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