On Aug 21, 2:24 pm, firstname.lastname@example.org wrote:
RPM isn't the main determinant of fuel usage. Load is.
Watch the governor/throttle linkage on a generator,
mower, etc as the load changes.
How much more a larger generator uses when running
a smaller load vs a smaller generator that is fully loaded
has been debated. Evidence was presented that it
depends on the generators, type of fuel, etc. It can
vary from very little difference to a more substantial
one. Best thing to do is look at the specs.
On 8/21/2012 5:05 PM, email@example.com wrote:
the power to your home? like 10kW or 20kW. and if so, which one and how much? Or
just stick with a 2kW, or so and time multiplex each operation - a little fridge
time, a little heater time, a little well pump time, etc.
because most have to run at a specific rpm to deliver the correct voltage and
I will add the observation that the life expectancy of the engine should
be a consideration also, since the smaller generators such as the
Generac and Guardian 6/7KW use a single cylinder engine whereas the
larger units all use a 2 cylinder engine with significant differences in
the choice of materials for the block, the head, the carbs, the type and
location of valves, etc.
Finding the actual reliability data (like MTBF, MTTR, failure modes,
etc.) is a tricky business, but at least one web site I am aware of
which specializes in Generac repairs has quite a bit of anecdotal
information. It is worth reading it carefully if you happen to chose
Generac or Guardian brand equipment and want to know which models seem
to survive with the least amount of hassles and problems.
It has been extremely helpful to me as I have been advising and helping
others making purchase and installation decisions over the last 5 years.
The forum is heavily frequented by very knowledgeable people, and also
contains a dealer rating service for those who want to leave the
installation to "experts".
Here is the link:
Hope this helps you and others,
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