[RE-wrenches] current carrying conductor

[Exeltech]

Allan is correct.

In a 240V 3-wire system (L-N-L), neutral carries no current with 240V loads.  In a *perfectly balanced* 120V system with absolutely equal loads on both L1 and L2, neutral again carries no current.  Key here .. absolutely equal loads.  Given unequal loads (the norm), the neutral leg carries current.

Dan


--- On Thu, 5/13/10, Allan Sindelar <allan at positiveenergysolar.com> wrote:

From: Allan Sindelar <allan at positiveenergysolar.com>
Subject: Re: [RE-wrenches] current carrying conductor
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Date: Thursday, May 13, 2010, 4:51 PM




  
Marco,

Seems to me he's right. It carries the net current difference between
L1 and L2 from the transformer to the loads.

But not having any EE training, I'm willing to learn better.


Allan




 
 
 
 
 
 
 
 
 




Allan Sindelar

Allan at positiveenergysolar.com

NABCEP Certified Photovoltaic Installer

EE98J Journeyman Electrician

Positive Energy, Inc.

3201 Calle Marie

Santa Fe, New Mexico 87507

505 424-1112

www.positiveenergysolar.com






Marco Mangelsdorf wrote:

  
  
  



  
  I have a disbelieving business partner who
believes that the
neutral conductor in a standard 120/240VAC service is a current
carrying conductor. 
     
  Could someone please disabuse him of that notion? 
     
  Thanks, 
  marco 
     
  
  



      
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