If the circuit breaker is rated "SWD" (switch duty), it is designed to
be used as a switch as well as a breaker. If it is rated "FLD"
(fluorescent duty?) it is further rated to be used as a switch for
lighting circuits with an inductive load.
An SWD breaker would be just fine for switching a water heater. I just
looked at my breaker panel and the 30A 2-pole breaker for the clothes
dryer is SWD listed. The 60A 2-pole breaker is not SWD listed, it is
HACR listed, which I haven't looked up to see what it means (probably
has something to do with heating and air conditioning circuits)
Notice how I avoided the part about whether switching the water heater
was a good idea.
On Thu, 28 Oct 2004 20:26:30 GMT, "Robert E. Lewis"
You can save a LOT of money by turning it off...and only turning it on
an hour or so before you actually need it. Most families don't need
hot water during the day. When I was single, I would turn the tank on
in the morning...then have coffee and breakfast while the water got
hot. I'd turn it off when I left for work.
Many, many retail and commercial businesses shut off breakers at the
end of the day.
Do some investigative work on your own...at some of the breaker
company web sites...and check out their specs. Most breakers are
rated for thousands upon thousands of cycles.
Have a nice one...
Budweiser: Helping ugly people have sex since 1876!
If you really don't use a lot of hot water the biggest saving is by taking the
wire off the bottom element. The heater will heat the top foot of water and
My mom's house ran like this for 30 years and it was only when she had the
grandkids over that the hot water got skimpy.
Chill out, you're wrong, you made a mistake.
Remember the first rule of holes.......stop digging.
basic physics says you're wrong.
I'll do the complete analysis but not for free.
Hopefully you're not a licensed engineer, otherwise I'll have to notify the PE
If turning the water heater off uses more energy why do utilities give rebates
for setback thermostats????
admit your mistake, its good for the psyche :)
you'll be happier & live longer
i have yet to see any proof i am wrong. i will willingly admit it if proven
as for the rebates, one could argue that they make more with the timers so
they kick you back a little and call it a rebate... hehe
while you may have found some info proving me wrong (which nobody else had
done previously, and clearly the savings for turning it off arent that much)
i think its ironic you blame me for having the ego...
and yes, it appears i was wrong. so there. now your ego is placated. do
you feel better, smarter, faster?
heater set backs typically reduce total energy consumption & do little for load
Peak electrical (summer) afternoon
Peak electrical (winter) early evening
Max peak is typically in summer not winter
However you look at it, the savings on a day by day basis would be near
nothing. Too small to be concerned with. If your friend is like me,
he'll forget to turn it on, and end up with a cold shower.
When I lived in an apartment I would turn the breaker off when I would
leave town for a few days. Once the water heater cooled to outdoor
temperature, it couldn't consume any more when heating back up than if I
left it on, right? So there was cost savings.
Now that I have my own house, I have my water heater on a timer. I'm on
the electric company's "time of use plan" so I have the water heater set
to turn off half an hour before the peak time, and turn on half an hour
after peak time.
Let's pretend the water heater must turn on for 5 minutes total during
the 7 hour peak time. That would be 5 minutes of energy costs at the
peak rate. But if the water heater is off, it cannot use this energy.
Once the timer clicked on, it would run for the same (or close) 5
minutes, but at the cheaper rate.
Now consider this, after the timer is off, there is still more than
enough hot water in the tank to take a shower or do a load of laundry.
(For me, that is.) So in essence, the hot shower consumes NO electricity
during peak times. Once the time kicks on again during the off peak
times, THEN is when the shower costs money. So I am "delaying" the
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