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Re: [APD] Odnos (2)
I think your difficulty with understanding why GFCIs work
as they do is that you are not thinking of them as several
diff things all in one package. They are a bundle of items,
include a pair of plug receptacles and wire terminals, an
energizing coil, a trip switch, a sensor coil, voltage
comparator, and a shorting circuit for testing purposes.
Lay these out and you can develop more possibilities than
you've imagined so far.
sh
--- Jerry Baker <jerry at bakerweb_biz> wrote:
> Vaughn Hopkins wrote:
> > Look at the GFCI as a relay-type device. When it is
> wired as yours is,
> > the wires that appear to be just parallel wires to the
> next socket are
> > really "downstream" of the relay. So, when that relay
> trips, it opens
> > the circuit for the GFCI outlets as well as the circuit
> leading to the
> > next socket in the parallel string. It really isn't
> just an isolated
> > device in parallel with other sockets.
>
> Can you tell I'm not an electrician yet? ;)
>
> If there are other devices downstream, doesn't that mean
> the circuit is
> not parallel? That's always been my understanding of the
> definitions of
> series and parallel circuits. Namely that a parallel
> circuit has more
> than one pathway so that cutting the power at one node
> doesn't cut the
> power at the other nodes.
* * * * * * * * * * *
Opening both barrels at once:
The Grand Opening
You can find the winners and all the other terrific entries in the 6th Annual AGA Aquascaping Contest here:
http://showcase.aquatic-gardeners.org
And the other Opening:
In response to repeated requests from aquatic gardeners, the AGA has opened forums for the benefit of the community:
http://forum.aquatic-gardeners.org/
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