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require study to determine if it is more suitable to use an inverter
or to use a generator for backup emergency AC power.
How do I choose the right size Inverter?
Power inverters are sold according to wattage or amperage.
The amount of wattage you will require depends on the total
draw of the devices you'd like to use. Most appliances and tools
have a wattage rating indicated on the product or included
in its operation manual. Always refer to this information before
buying an inverter. If you want to run several devices at once,
you must add the total wattage of the items in consideration. As
a precautionary measure, it is recommended to buy an inverter
with 10- 20% more power than your largest load.
For example: If your DVD player draws 100 watts and your coffee maker draws
800 watts, a minimum of 900 watts is necessary to run these appliances at the
same time. If you include a 10- 20% precaution, you should have ample wattage.
It is also important to take into consideration start or peak
load (approximately 2-3 times normal wattage). When some
appliances are started, they may require a larger initial surge
of power, then run at a more even, continuous power draw.
Always take surge/peak/startup wattage into account before
purchasing your inverter. It is also important to make sure
the inverter is noted as "continuous" or "uninterruptable";
this decreases reset and shut-off issues which can damage
appliances.
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