Posted by Bruce Gordon on December 18, 2010, 9:23 pm
You just need to rethink your Battery/Inverter voltage decision. If you
went to 24 Vdc, your current draw would be 65 Amps, and at 48 Vdc would
be 32.5 Amps. when running inverters with power draws greater than 1Kw,
you really need to move to 24 Vdc minimum, and for 3-4Kw, 48 Vdc, is
Bruce in Alaska add path before the @ for email
Posted by m II on December 19, 2010, 2:37 am
On 10-12-18 02:23 PM, Bruce Gordon wrote:
True enough. My only excuse is that all I had available at the time were
12 volt inverters, including a 3000 watt unit. An advantage to 12 volts
is the plentiful source of automotive stuff which can be adapted. The
mp3 car stereo sounds great. In an emergency I could also boost the
battery bank from the car.
If I were starting from scratch, I'd probably try to go with 36 volts.
Posted by z on December 18, 2010, 8:02 pm
It depends on how much you pay for electicity now. If your power company
started charging 50cents a KWH or higher then maybe it'd be worth it.
Many of us in this group don't have ready access to the grid, so while
expensive, solar, wind and hydroelectric are better than nothing.
I can tell you these do pay off if the alternative is buying fuel for a
-Zachary in Oregon
Posted by Jane_Galt on December 19, 2010, 12:31 am
Looks like 4.5-9 cents a kwh
"The first tier is figured as 500 x 0.03125 to yield 15.63 kwh at 4.6 cents
per kwh, costing 72 cents.
The second tier is figured as 107 x 0.03125 to yield 3.34 at 9 cents per
kwh, costing 30 cents.
This was approved by the Colorado Public Utilities Commission last year
when it approved Xcel's $28 million rate hike and the two-tiered system.
Read more: Xcel's complicated rate changes jolt some customers - The Denver
I guess. If I was really rich and buying a survival retreat in a rural
- Jane Galt
"Remember that there is no such dichotomy as 'human rights' versus
'property rights.' No human rights can exist without property rights. Since
material goods are produced by the mind and effort of individual men, and
are needed to sustain their lives, if the producer does not own the result
of his effort, he does not own his life. To deny property rights means to
turn men into property owned by the state. Whoever claims the 'right' to
'redistribute' the wealth produced by others is claiming the 'right' to
treat human beings as chattel." -- Ayn Rand
Posted by Curbie on December 19, 2010, 1:06 am
The DOE has Colorado at $.1176 per kWh for residential???