Amp & Watt
Hour Calculator & System design Tool
Also
see the Inverter-FAQ section
This
Amp & Watt Hour Calculator is provided to help you understand
some basic electrical terms & calculations. It can give you
an estimate of your total power usage (in either amp hours
or watt hours).
However
we still urge you to make use of our services to give you a more
detailed and accurate assessment of your power usage and what equipment
you will require to meet your electrical loads. This calculator
is not meant to be used as a total 'power system designer'.
The
actual power usage of many appliances can vary considerably
from what the compliance label suggests- eg a washing machine
rated at 1800 watts may only use 100 watt hours of power
per load if the water heating element is not used! Microwave
ovens, fridges, computers & home
entertainment devices are other examples of equipment where
experience is needed to accurately assess the expected
watt hours of actual power used.
Our
software takes several more variables into account. This
allows us to give you a much more accurate report of the
expected output from your solar modules based on monthly
insolation data, temperature, module orientation & angle. The angle that we recommend for
your modules will take account of not only where you live but will
also have regard to the seasonal variations of your expected solar
imput and electrical loads. Loads for lighting, fans & refrigeration
are varied for temperature and day length variables. We give you
details of recommended battery capacity & voltage. We calculate
what type & size of inverter you may require based on the type
of loads being run, peak & continuous power requirements, as
well as power factor. We may also make recommendations
on how to reduce your loads. So there is more to designing
a system than just the simple calculation of amp hours
or watt hours.
If
you would like us to do such an assessment for you, please complete
and return this form: http://www.rpc.com.au/products/services/PowerSizeQuestionaire.pdf
Solar
System Design Tool
Note:
If you want to get an estimate of the number of solar panels
required, you need to leave the Volts at 12.
For any 240V appliances, enter the watts AC not Amps AC. If you only
know the AC Amps, multiply by 240 to get watts.
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