[RE-wrenches] Backup Mode Indicator for Whole Home Battery?

[Jerry Shafer]

Wrenches, so here is what l have done seems to work well back up lamp
attached to the backed up loads and to the same line not backed up, so when
the grid is up lamp is powered on both sides but when the utility fails the
lamp has a path to neutral, a 35 watt lamp leaves nothing on the neutral
that is connected in the utility transformer. l also have indicators from
the genny so you can see without hearing.
Fun times.

On Fri, Feb 28, 2025, 5:49 AM Blair May via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Have a look at these relay combinations. Relay in a box @
> www.functionaldevices.com. Easy install, its what I use to let me know if
> the grid is connected. T
>
>
> On Feb 27, 2025, at 10:08 PM, Corey Shalanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Hi Nicholas,
>
> Related to Richard's suggestion, please see the attached diagram. This was
> posted previously to the message board (back in the early 2010s?)—but, for
> the life of me, I cannot track down the original message in the archives...
>
> Corey Shalanski
>
>
> On Thu, Feb 27, 2025 at 11:09 AM Richard Scott <cheezemanrich at gmail.com
> > wrote:
>
>> How about a relay powered by the AC grid with SPDT contact configuration.
>> Use normally closed contacts to close a circuit turning on a lamp or
>> other device powered off the backup AC power.
>> When the AC grid goes down, the relay de-energizes and closes the
>> normally closed contacts thereby turning on the indicator device.
>>
>> Richard
>>
>> On Thu, Feb 27, 2025 at 9:18 AM Nicholas Ponzio via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>>> Dear Esteemed Wrenches,
>>>
>>> This issue arises periodically, and I'm hopeful someone in the group has
>>> devised a cost-effective, low-power solution.
>>>
>>> For a whole-home backup system, how can we best alert homeowners that
>>> they are operating on battery power? These homeowners do not use
>>> smartphones and won't receive push notifications. Is there a simple
>>> solution to activate a single light or audible alarm exclusively when the
>>> grid is down? This particular instance involves a FranklinWH system, but
>>> the same challenge applies to any battery with a whole-home backup and
>>> "instant-on" transfer switch.
>>>
>>> Thank you in advance for your insights.
>>>
>>> Sincerely,
>>> Nicholas Ponzio
>>> Building Energy
>>>
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> Blair “TUMP” May
> Solarwinds Northernlights east
> "We must all learn to live together as brothers,
>  or we all will perish as fools."
> MLK
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