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For example: If your electric heater has a running wattage of 800 and a starting
wattage of 1200, and your inverter supplies 1000 watts, you may not be able to
start the heater. Fusion power inverters have a built in start up load capacity to
help provide extra short term power in these situations. Ultimately, a 1400 watt
inverter would be ideal in this situation. The following formulas may be helpful in
determining wattage and starting loads:
Formula 1: Volts (120) x Amps = Watts
Formula 2: Watts x 2 = Starting Load
(Note: This is an approximation formula only.)
Modified Sine Wave vs. True Sine Wave?
Inverters produce two types of output voltage: modified sine
wave and true sine wave.
Modified sine wave: Most household electrical devices will
run fine on either type of wave form, although modified sine
wave inverters are the most affordable and efficient enough to
sufficiently run most devices. Modified sine wave inverters are
the most common types of power inverters on the market and
are easy to use, operating through the cigarette lighter socket in
your vehicle. We usually suggest choosing power inverters that
are rated under 400 watts when using the 12-volt cigarette lighter
socket found in most vehicles.
True sine wave: True sine wave inverters deliver more consistent,
higher quality output, but are also more expensive. Applications
that can benefit from improved clarity. such as high tech
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