Searching \ for '[OT] GFCI/RCD' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=gfcircd
Search entire site for: 'GFCI/RCD'.

Exact match. Not showing close matches.
PICList Thread
'[OT] GFCI/RCD'
1999\09\15@191405 by Mike Keitz

picon face
On Wed, 15 Sep 1999 15:45:03 -0400 Sean Breheny <spam_OUTshb7TakeThisOuTspamCORNELL.EDU>
writes:
> If so, AFAIK, RCDs are NOT standard in US homes.

They're required in new installations since about the '70s, but only in
certain places.  Definitely for any outlets outdoors or in a bathroom,
maybe some kitchen circuits as well.  Circuits for washing machines
dishwashers, etc. don't have to have them.  Older houses are under the
usual "grandfather clause."

In fact,
> I
> have never seen such breakers (that I recognized,anyway) on a whole
> circuit,only on individual low-current outlets (usually in
> bathrooms) and
> integrated into certain appliances (usually hair dryers).

Most makers of breaker boxes offer a unit the size of a standard breaker
that combines over-current and GFCI protection.  These can be recoginzed
because they have a "test" button.  In my experience they are more
expensive and less reliable than the type of GFCI that is built into an
outlet.

The outlet type has output terminals after the GFCI on the back so it can
be wired to protect more than it's own outlet.  Most house circuits are
wired in "daisy-chain" fashion.  If the GFCI outlet is the first one
after the feed from the breaker box (and installed properly), all the
other outlets on the circuit will be protected.

It is quite common for GFCI units to fail in a way that they do not
detect leakage current.  The "test" button simulates a small leakage and
should cause the device to trip.


___________________________________________________________________
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: dl.http://www.juno.com/dynoget/tagj.

1999\09\15@194600 by Sean H. Breheny

face picon face
Hi Mike,

At 06:39 PM 9/15/99 -0400, you wrote:
>They're required in new installations since about the '70s, but only in
>certain places.  Definitely for any outlets outdoors or in a bathroom,
>maybe some kitchen circuits as well.  Circuits for washing machines
>dishwashers, etc. don't have to have them.  Older houses are under the
>usual "grandfather clause."

Hmmmm. Well,this rule must be often broken. My house was rewired (before we
bought it) around 1985 or so, and it has none of these devices installed. I
have never seen them on outdoor outlets anywhere that I recall,only in
bathrooms,and not always there,either.

>Most makers of breaker boxes offer a unit the size of a standard breaker
>that combines over-current and GFCI protection.  These can be recoginzed
>because they have a "test" button.  In my experience they are more
>expensive and less reliable than the type of GFCI that is built into an
>outlet.

Well,this confirms what I thought. My house has no such breakers,only the
traditional over-current protection ones. I can't remember seeing them in
breaker boxes in other houses in my area,either.

Thanks to all for the explanation and discussion,

Sean

|
| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
.....shb7KILLspamspam@spam@cornell.edu ICQ #: 3329174

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...