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Posted by Terry on April 1, 2008, 9:35 pm
On Tue, 1 Apr 2008 15:32:00 -0700 (PDT), gobofraggle@gmail.com wrote:
>I have a hardwired smoke detector that is old and outdated, that I'd
>like to switch with a new unit. The only problem is that I can't
>shut
>off the power to the alarm before I disconnect it and reconnect the
>new one. I'm going to have to do the take-down and installation
>while
>the power is LIVE.
>
>I live in a high-rise apartment building and the smoke detector is
>powered not by my unit's individual power, but off of a line brought
>in from a common hallway. There is no way to cut power to the smoke
>detector without cutting power to all the lights in the common
>hallway, which is impossible.
>
>
>So, how can I safely (or as safely as possible) change this detector
>with a new one? If I don't touch certain wires together, will I be
>OK? What are the chances I would get shocked?
>
>
>I know your first inclination will be to tell me to get the circuit
>turned off or call an electrician, but please (at least
>hypothetically) assume that neither of those options are possible.
The way you do it safely is to turn the power off.
Anyone that tells you "It can't be turned off" is lying
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