In addition, the RX switches won't handle inductive loads.
BUT, I agree with everyone else, don't substitute the ground for a
neutral wire.....
Martin Custer
Ya know, I have kinda' wondered about that too. If you look in your panel,
you will find that all 110v circuits have one leg tied to the neutral
(white) which is in turn tied to the ground bar with the other leg (black)
tied to the feed from the circuit breaker. Soooo... if the "ground"
conductor is the same gauge wire as the feed, what is the REAL difference
between the ground connector and the neutral at the switch box??? What an I
missing???
I read an article that says you can substitute ground for
neutral when wiring an x10 switch. Something tells me if this
workaround was a good idea I'd have heard more about it. Comments
anyone?
That's the plan. My understanding is that the neutral-less switches
come with a few disadvantages
- Somewhat less reliable (varies with the installation and may not matter,
however)
- Can't use on fluorescent lights
- Not pollable
Do I have this right? Thanks again for the input.
You're missing the electrical code requirements that specify that the
neutral is to be bonded to ground at the service panel ONLY. The ground
is a safety conductor only. The REAL difference? Not much, but an
illegal installation that violates codes can invalidate your insurance
so it's just not worth doing.
From:Gemini
snipped-for-privacy@nowhere.net
You can.
But it goes against almost every electrical code, for valid reasons.
Of course many people used to put pennies in fuseboxes too.
Some got away with it, some didn't.
Do you want to take the chance, of being one of the ones who didn't get away
with it ?
Gypsy
ground/earth
The neutral and ground are only guaranteed to be at exactly the same
potential where they're tied together at the fusebox. Everywhere else,
Ohms law (V=IR) says that, if the wires are carrying current, they're
not at ground potential, depending on the resistance of the wires and
the amount of current being carried. In a properly wired house, only
the neutral wires carry current, so only the neutral wires are at
non-ground potential.
The electrical codes insist that the safety ground wires not be used to
carry current during normal operation, not only for the very good
reason
you state, but also because lots of things will become at least a
little
bit hot/live any time the safety ground wires are carrying significant
current.
--Rich
Hi
The Neutral and ground are at the same potential , but the ground/earth
wire is there for protecting users and it directs fault currents to
earth so to trip the circuit breaker or blow a fuse..
If you use the ground/earth wire for a neutral AND you loose your main
earth connection ALL metal devices that are grounded/earthed may become
hot/ Live!!!!
Not a good idea......
HTH
Frank
Sorry to jump in late here - getting caught up on the newsgroups.
While I fully agree that it is not a good idea to wire into neutral for
X10 ground, it is wrong that the neutral is not used to carry current
under normal conditons. A lot of electronic equipment with three-prong
plugs have noise surpression capacitors tied from both "blades" to the
ground prong. This induces a small current in the ground lead that is
carried back to the panel. It also causes the unfortunate condition
that if the ground lead opens for any reason, the metal equipment case
floats at half line voltage through the capacitor divider. While low
current, it can give a surprising shock when one is not expecting it.
The neutral lead in a X10 switch provides a return signal path when the
load is open. The current involved is similar to that caused by the
noise filter in electronic equipment plugged into the wall. And it can
cause the same surprise should the neutral open for any reason.
Jeff
Sorry to jump in late here - getting caught up on the newsgroups.
While I fully agree that it is not a good idea to wire into neutral for
X10 ground, it is wrong that the neutral is not used to carry current
under normal conditons. A lot of electronic equipment with three-prong
plugs have noise surpression capacitors tied from both "blades" to the
ground prong. This induces a small current in the ground lead that is
carried back to the panel. It also causes the unfortunate condition
that if the ground lead opens for any reason, the metal equipment case
floats at half line voltage through the capacitor divider. While low
current, it can give a surprising shock when one is not expecting it.
The neutral lead in a X10 switch provides a return signal path when the
load is open. The current involved is similar to that caused by the
noise filter in electronic equipment plugged into the wall. And it can
cause the same surprise should the neutral open for any reason.
Jeff
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