On Nov 18, 2006, at 6:47 AM, pentalab wrote:
> --- In
ham_amplifiers@yahoogroups.com, R L Measures wrote:
> >
> > The issue is not what the latest NEC requirements happen to be,
> > it's questions like: Does it make
electrical sense that to
> be "safe" we need 4 wires for a 240v circuit, where 2 of the 4
> wires carry zero- current? Recently when I was at Home Depot, I saw
> a reel of 4- conductor #8 Cu. At first it struck me as odd, but
> then it dawned on me that this was the NEC's latest rule for
> wiring electric ovens and dryers.
>
> ### Rich... u still don't "get it".
Correctomundo, Jim
> On any stove made in the
> last 45 yrs... they all have a 120 vac outlet..sometimes two.
My GE has no outlets, but it does have a 40w, 120v lamp.
> Most still have a row of glass fuses inside the top cover. A
> stove would have to have a neutral just to run the 120 v stuff.
> The built in light runs on 120 v. I'm not quite sure.... but
> think the small burners on top run on 120 v.. may be wrong.
Semi-correct. 120v on low heat. 240v on high heat.
> I
> think they ran 2 x burners from
one hot leg.... and the other 2
> burners from the other hot leg.
Not on my GE.
>
> ## To recap.... 3 of the wires carry current. The 4th is to
> save ur skin.
In someone's theory, yes, in reality, if no 4th wire were used, with
a dead short from one L to N at the stove, there would be c. 50V on
the enclosure for <2-seconds.
>
> later... Jim VE7RF
>
>
>
R L Measures, AG6K, 805.386.3734
r@...,
rlm@..., www.somis.org
