Thanks, David -- that definitely points me in the right direction.

Tripplite does still make them:
http://smile.amazon.com/Tripp-Lite-PDUMH15AT-Metered-Horizontal/dp/B000MNBWW0/ref=sr_1_3?ie=UTF8&qid=1417047300&sr=8-3&keywords=auto+transfer+switch+pdu

That's the cheapest one they have, and at nearly $300 a little more than I
want to spend.

However, I also found this:
http://smile.amazon.com/Tripp-Lite-PDUB15-100-127V-Horizontal/dp/B003HLUDC4/ref=sr_1_1?ie=UTF8&qid=1417047382&sr=8-1&keywords=pdu+manual+transfer

For $150, that's a manual transfer switch.  I can leave it running off the
UPS (because the UPS is already and automatic transfer switch), and if
power fails, I can have the second input source be the generator-powered
wall outlet.  I can just turn the knob to switch to generator, and back
when power is restored.

It's a *little* more than I wanted to spend, but not a whole lot, so this
may do the trick.  I'll keep poking, but I like this idea.

-Adam

On Wed, Nov 26, 2014 at 7:06 PM, David Nolan <[email protected]>
wrote:

> You can get a dual input PDU that will auto switch between sources,
> connect one input to the ups, the other to a generator circuit.  I haven't
> bought one in a while but tripplite  used to make them.  The tripplite
> units were designed for rack usage and are not cheap, so may not be the
> right solution for your needs, but I'd hope there are some less expensive
> equivalent systems for home use.
>
> -David
>
> On Wednesday, November 26, 2014, [email protected] <[email protected]>
> wrote:
>
>> Thanks, Doug. I used to have one like that. I don't need something that
>> big really, but the key for me is how to charge it off the generator. If I
>> have to move the plug from the ups to a generator powered receptacle, it
>> defeats the purpose of "uninterrupted".    :)
>>
>> Adam
>>
>>
>>
>> > On Nov 26, 2014, at 6:44 PM, Doug Hughes <[email protected]> wrote:
>> >
>> >
>> >> On 11/26/2014 4:35 PM, Adam Levin wrote:
>> >> Hey all, I have a tangentially-related computer power question.
>> >>
>> >> I have one of these at home:
>> >>
>> http://smile.amazon.com/gp/product/B000RZPK1M/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
>> >>
>> >> It's just good enough to keep my home network running for 1-2 hours
>> during a power outage (Apple Airport Extreme, DSL modem and an 8 port wired
>> switch).  I also have a couple of home NAS drives connected to it, so if I
>> know the power's out, I can shut them down cleanly.
>> >>
>> >> I also have a portable generator that I can connect to an outlet
>> outside, and a 10 circuit manual transfer switch.  If power's out for a
>> while, I can turn that on, plug it in, and cut over the 10 most important
>> circuits in the house (if you're curious, they are the heat, the
>> refrigerators, the bathroom lights, the microwave, and the TV -- yes, I
>> have kids :) ).
>> >>
>> >> One of the circuits that happens to be on the transfer switch is the
>> circuit that the UPS is plugged into.  However, those of you familiar with
>> such things will know that the power from a portable generator is *hardly*
>> what can be called "clean".  In fact, it's so dirty that the UPS will not
>> charge off of it.
>> > I bought an APC 2200RM many years ago and haven't regretted it (Ebay).
>> I haven't tried running it off a generator, though. I have had to replace
>> the batteries once. BatterySharks.com has very nice and much more
>> affordable replacement batteries with the same specs as the original
>> panasonic batteries. There are others available that match the specs as
>> well (size and VAH)
>> >
>> > It's enough to power 1 2U and 1 1U server for about 40 minutes. Given
>> your load, it'd probably go quite a few hours.
>> >
>> >
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>
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