Matt Tritt wrote:
Darryl,
Say what?! This would seem to indicate that solid core is actually
better for DC than stranded wire. Can this possibly be true??
Matt
The reason that stranded is higher resistance than solid is that there
is more "air" in between the strands. Solid
wire doesn't have that empty space. It's harder to maneuver though and
can be harder on breaker studs for the
big stuff. Stranded doesn't have any (or VERY little) effect on AC
since the strands are not normally insulated
from each other.
However, multiple strands of insulated magnet wire in transformer
manufacturing and other things DO have positive effects
and is done all the time to reduce high frequency effects.
boB
Darryl Thayer wrote:
I looked in the code book and found stranded wire has about 2% higher DC
resistance than solid, Chapter 9 table 8, and that for AC resistance the same
value as DC resistance to within the table accuracy Chapter 9 Table 9
This table points out that for AC resistance it is important to know the conduit system, as the reactance will have an effect. With AC it is important to never allow a single wire to pass through a metal surface as this will induce eddy currents and magnetic effects into the metal causing voltage drop and heating.
--- On Fri, 7/31/09, jay peltz <j...@asis.com> wrote:
From: jay peltz <j...@asis.com>
Subject: Re: [RE-wrenches] solid vs stranded AC vs DC
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Date: Friday, July 31, 2009, 10:01 PM
Hi Darryl,
But what are the differences and when do they come into
play?
On Jul 31, 2009, at 7:25 PM, Darryl Thayer wrote:
Well there is very slight differences between AC and
Dc But this
difference
is so slight that it has no effect on anything we will
do.
Darryl
--- On Fri, 7/31/09, jay peltz <j...@asis.com>
wrote:
From: jay peltz <j...@asis.com>
Subject: [RE-wrenches] solid vs stranded AC
vs DC
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Date: Friday, July 31, 2009, 7:00 PM
HI All,
I'm trying to understand this wire issue.
Whether or not there is a difference between
stranded or
solid wire for DC or AC.
Any takers on this one?
thanks,
jay
peltz power
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