Backup Power Schemes

Bill McCauley sez:

In earthquake country, natural gas is as prone to interruption as any other
utility.

True. I had not factored that in. Further, in extreme cold weather,
propane freezes (really, does not go liquid->gas).

But barring the gas utility starting rationing, it is in many
places a viable option. I know a large ISP here in DC has such,
or did...

Does :slight_smile:

Bill McCauley sez:
> In earthquake country, natural gas is as prone to interruption as any other
> utility.

True. I had not factored that in. Further, in extreme cold weather,
propane freezes (really, does not go liquid->gas).

Ya, been there, I had to heat the tank VARY carefully with a blow torch.
There is stuff out there to keep the tank heated, but can lead to
problems.

But barring the gas utility starting rationing, it is in many
places a viable option. I know a large ISP here in DC has such,
or did...

Ya, also been there. They shut my house off during that winter, but hehe I
own a pipe wrench. So now big deal.

Nathan Stratton President, CTO, NetRail,Inc.

I have had propane tanks out in -30 F weather. I have never had a problem
with any tanks freezing.

Are you certain that you had propane and not #2?

Rob Nelson
rnelson@internoc.com