I'm fortunate to have gas stove, and gas water
heater. Those were both totally appreciated
during the winter power cut.
After the four day power cut, I bought a marine
battery and power inverter. Figured I could have
an hour of furnace before bed time. Quietly, would
not alert the neighbors "hey! fatty has a
generator!". Turns out the generator did not have
enough starting current to run the blower wheel.
I did try spin it by hand to get it going. Still
no joy. The replacement furnace has a circuit
board. I don't want to risk that to modified sine
I did call the company that makes the furnace,
to ask if it would run on mod sine. They suggested
I check with the parts house where I bought it.
The "would you like fries with that" people are
not likely to know the technical details of the
Also likely the DC power wires to the battery were
On Fri, 15 Apr 2016 18:06:01 -0400, Stormin Mormon
That 80K BTU furnace will in all likelihood have a 1/2HP induction
motor for the blower and draws a peak of about 1400 watts for a second
or more to get the blower up to speed (almost 12 amps). One reason why
a furnace is required to be installed on a dedicated circuit.
That means running it draws 60+ amps from the battery - starting draws
about 125 amps.
The new DC blowers draw a lot less on startup because they "soft
start" - and are more efficient when they are running as well.
On 4/15/2016 11:03 PM, firstname.lastname@example.org wrote:
I did save the old blower, for use as a carpet
drier. It's under some other clutter, and not
worth the bother to dig it out. Half HP sounds
about right, maybe 1/3. In either case, that's
a lot of draw of 12 volts to get it going.
Maybe if my inverter had bigger cables. Or wired
in parallel with car battery.
On 04/15/2016 05:06 PM, Stormin Mormon wrote:
That's what happened when I tried it. Gas valve opened, flame came on,
everything was OK until the blower started. Inverter showed overload
immediately. That was the night of the ice storm. I was in a new (for
me) house, and that's when I discovered I had gas logs.
Meant inverter, not generator. Perhaps we can
find out what we needed to do better. Well, perhaps.
In my case I bought a gasoline generator.
You, gas logs. I like the gas logs. Less dragging
them out doors and pouring gasoline into them.
On 4/14/2016 10:12 PM, email@example.com wrote:
Ah, monoxide. A vastly under recognized cause of
mental confusion, using a 12 volt impact wrench to
provide enough BTU to warm the room. An old fashioned
top loading washing machine is far superior for
cleaning flat tires on your 2000 model Chevrolet.
Of course, tree huggers will want to use a Ranco (R)
ball rotator, to thoroughly cook a thanksgiving
turkey, in the 20 watt power converter, which is
running off the Harbor Freight power generator which
was purchased with a 20% off coupon, and came with
a free screw driver set. No, I'm not suffering from
exposure to garden hose.
On 04/14/2016 03:58 PM, Stormin Mormon wrote:
I used my generator when power was out for several days after the
tornado in May 2015. In that case, it was hot so I used a window air
conditioner on it. Of course it wouldn't cool the whole house, but I
could go in the kitchen to cool off.
There was another time I needed the furnace. When I bought this house,
the furnace had a cord and plug. When I had it replaced 3 years ago, the
new one was connected with a cord and plug. It would be easy to use that
on a generator.
I bet a lot of people in the south would LOVE to have
a window AC and generator.
Furnace on a cord and plug is excellent idea.
I've heard the National Electric Code calls
for hard wired. Not sure why, the cord and
plug is great for power cuts and generators.
On Fri, 15 Apr 2016 19:42:20 -0700 (PDT), bob_villain
As far as the question of how the reliance power-back works - I can
confirm it is a VOLTAGE semsor, not a current sensor, and it works
just fine with an interlock.
Sinse that discussion I have replaced my fuse panel with a breaker
pannel with an interlock and power-back. I can now connect my new 7200
watt tri-fuel genset to the house and run anything I need.. On
gasoline or propane I can get 7200 watts - on Natural Gas I get 5000
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On 4/13/2016 10:35 PM, firstname.lastname@example.org wrote:
On Wed, 13 Apr 2016 09:59:45 -0400, Stormin Mormon
Easy enoiugh to figure out. What is the peak power draw on a half
inch low speed drill? My Makita is rated at 6.3 amps - so 750 watts.
Being a universal brush type motor it MIGHT draw1500 watts starting
into a load. I'd say a 2500 watt inverter would work just fine. Might
get away with a 1750
About the same as would be required to run a coleman furnace in a
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