Smoke detectors

Posted by Kurt Ullman on October 24, 2009, 8:53 am

I have some 20 y/o hard-wired smoke detectors that I want to replace
with newer hard-wired ones. How do I figure out which circuit breaker to
trip or is this an issue with smoke detectors?

--
To find that place where the rats don't race
and the phones don't ring at all.
If once, you've slept on an island.
Scott Kirby "If once you've slept on an island"

Posted by Van Chocstraw on October 24, 2009, 8:56 am

Kurt Ullman wrote:

> I have some 20 y/o hard-wired smoke detectors that I want to replace
> with newer hard-wired ones. How do I figure out which circuit breaker to
> trip or is this an issue with smoke detectors?
>

If it's not marked in the box you'll have to trace the circuit either
electronically or manually.

Posted by terry on October 24, 2009, 9:46 am

> Or just short the two leads. That's an efficient way to identify the
> correct breaker.

.
WEARING SAFETY GLASSES (and maybe leather gloves!) just in case some
hot metal from the spark heads for your eyeball.
Two copper wires shorting together and sparking 20 amps at 120 volts
or so =3D 2400 watts of hot 'welding' metal.

Posted by Stormin Mormon on October 24, 2009, 12:17 pm

Also known as the "Jesus method". I've seen it done. Not
tried it (intentionally) yet.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

Or just short the two leads. That's an efficient way to
identify the
correct breaker.

Posted by Jon Danniken on October 24, 2009, 1:20 pm

Stormin Mormon wrote:

> Also known as the "Jesus method". I've seen it done. Not
> tried it (intentionally) yet.

When I was a kid in high school, I stripped the end off of an old line cord
and arced the wires together to look at the sparks. My friends were always
impressed, and I thought it was pretty cool.

It di require frequent resetting of the breaker, however. Fortunately, I
ended up learning about Tesla coils and used them instead for my spark fix.

Jon

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