Check the spec plate on the cook top if it is only a 220/240 volt cook top,
and it sounds like it is, then you do NOT use the white wire, you use the
red to red, the black to black and the green or ground to the bare ground.
In a normal residential installation the power comes into the main load
center on two 120 volt legs that are 180 degrees out of phase, the 120 volts
are measured from the leg to the center tap of the transformer(which is
brought into the house as the neutral line), that is how you get 120, if you
omit the centertap, the neutral line, and measure from one leg to the other
you get a differential of 240 VAC. Do NOT tie the white and ground (ground
is tied to either a metal cold water pipe or a long ground rod pounded into
the earth, why the Brits call it earth instead of ground) together outside
of the load center, even in some areas they cannot be tied together in the
load center. So basically black to white=120vac, red to white=120vac, and
red to black = 240vac, and ground is ground.
ck
-----Original Message-----
From: DoIt_Yourself@yahoogroups.com [mailto:DoIt_Yourself@yahoogroups.com]
On Behalf Of petey_racer
Sent: Thursday, September 22, 2011 5:51 AM
To: DoIt_Yourself@yahoogroups.com
Subject: [DIY] Re: 220 3 wire and 2 wire
Another clarification.
A 120/240v range or dryer ALWAYS required a neutral. It was the ground that
was allowed to be omitted. The neutral served both functions in an older
"3-wire" setup.
--- In DoIt_Yourself@yahoogroups.com, "wired" <wiredformen@...> wrote:
>
> One more fact about ranges/cook tops and the white and bare (or green)
wires. Before a few years ago, the green (bare) and white were put together
and the male cap was 3 prong. Now they have to be separated and use a 4
prong cap (for those having a white (neutral) wire). Often the older
appliances came with the two wires attached together.
>
> --- In DoIt_Yourself@yahoogroups.com, "hapennyherald" <hapennyherald@>
wrote:
> >
> > Have something I am uncertain about. The wiring to a stove top is 3
wire + ground Has Black Red White and a smaller bare. The cook top has
Black Red Green all insulated.
> >
> > My inclnation is Black to Black Red to Red and White to Green (since
the white and ground are attached to the same bar in the panel) and attach
the bare wire to the metal box ( since metal boxes have to be grounded.
> >
> > Also would you advise wiring an outlet or hardwiring?
> >
> > Thanks David
> >
>
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