A GAS water heater uses 500 running watts, and 1500 watts to start it.
What the fuck?
Gas water heaters dont use ANY electricity......
(copied from that web page, see second from the bottom)
Coffeemaker: 1,750 running watts, add 0 watts for starting
On Monday, April 18, 2016 at 10:04:30 AM UTC-4, Scott Lurndal wrote:
So what? Are you suggesting that a table for emergency generator
sizing is listing the gas heating energy, not the AC power that's
used for the blower, ignitor, etc.? Good grief.
As to 500W being high, generator sizing charts are typically on
the high side, that has already been noted.
On 04/15/2016 11:05 PM, firstname.lastname@example.org wrote:
"Watt" is simply the term for the rate of energy transfer,
It does not have to be measured in terms of volts x amps.
Interestingly , I just read the autobiography of Lee deForest and at one
point in the book referred to the "horsepower" of a radio transmitter.
If it has an exhaust motor that draws 500 watts when running then it
would be about a 2/3 HP motor...I'd think a 1/10th HP motor should be
able to move those exhaust gases OK for sure a 1/4 HP motor I'd think.
I was thinking of eventually getting such a water heater but may just go
That's true, but higher up the page it says "The chart below shows how
many watts of **electricity** it takes to run various household
appliances". It's about buying a generator and transfer switch.
And how could it use 1000 more watts of gas power for starting than
for running? The gas burnt is going to be the same, or close.
On 04/15/2016 10:05 PM, email@example.com wrote:
Looks pretty accurate to me.
My Lochinvar LVN041G Power Vent Water Heater
40,000 BTU Natural Gas
uses 2.7 Amps (~325 Watts)
(measured with a Fluke 902 HVAC Clamp Meter)
and if those facts don't put you to sleep, consider this:
An 8 minute shower causes the heater to run for 26 minutes.
If knew the price per MCF of gas, I could calculate the cost of a shower...but I'm too lazy to go look it up.
On Saturday, April 16, 2016 at 11:12:11 AM UTC-4, firstname.lastname@example.org wrote:
It came from a generator sizing chart, which are dubious at best.
I agree, it looked high to me too. They also have 800W for a fridge
and 400W for a TV. Fridges of the last decade or so use about half
that. My new 55" TV uses ~75W. Who knows where their numbers
really came from, how old they are, etc. They probably use high
end of possible usage for everything. The real issue he had was
that he apparently didn't think a gas water heater would use electric,
but the power vent type do.
I was monitoring the current from my generator that I used after the
tornado last May. The first load I connected was the fridge (new
side-by-side from late 2008). It was using a little more than 1A (about
150W). I checked it several times,and it never exceeded that. I think my
TV (37-inch LCD with fluorescent backlight) is about that too.
On Saturday, April 16, 2016 at 12:38:18 PM UTC-4, Mark Lloyd wrote:
Couple years ago during hurricane Sandy, I had a KillaWatt meter hooked
up with a generator too. Monitored a fridge and a freezer, both made
within the last 7 years. They kicked up to about 350W when started,
then immediately started dropping, down to like ~100W, consistent with
what you saw. I also had it on my 5 year old side by side KitchenAid
fridge, it pulls ~90W.
On Sat, 16 Apr 2016 00:05:20 -0400, email@example.com wrote:
It's a hybrid water heater. When there is gas, it heats the water
which powers a dynamo which charges storage batteries. When the gas
is interrupted, the batteries heat the water.
When you've got money, it's worth spending money to protect oneself
from problems, even less common ones.
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