Re: Alarm system transformer + power supply (would both go bad atonce?)

["Michael A. Terrell" <mike.terrell@xxxxxxxxxxxxx>]

Danny D'Amico wrote:
>
> On Tue, 26 Nov 2013 23:21:02 -0600, Nightcrawler® wrote:
>
> > Not weird at all.  The ground is electrically isolated from the
> > secondary of the transformer.  What you are seeing is phantom
> > readings.
>
> Thanks for the confirmation. I have no experience with this type
> of transformer. I wonder why they even have the center lug, but,
> maybe it's for other applications.
>
> If I were a technician, it wouldn't have taken this long to
> get a replacement transformer, so I would have been at this
> stage within the first hour had I a new one in stock.
>
> The 12V 5AH battery also appears to be low, so, I'll get
> a new one on the net.  The one thing I'm worried about is
> the terminal sizes.
>
> In car batteries, the "series" determines if the battery
> will fit (e.g., terminals on the side, or on the top, etc.).
>
> But I'm not sure *how* one scopes out prospective gel cells.
> For example, here's an ELK which looks like it should fit:
>  http://www.surveillance-video.com/elk-06120.html?productid=elk-06120&channelid=BCOME

There are two sizes of terminals in that current range. 3/16" wide and
1/4" wide The 3/16" is common in low current applications, and the 1/4"
in UPS.


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