User`s manual

Sine Wave
User’s Manual—Please read before using this equipment
©2009 Wagan Corporation. All Rights Reserved.
Wagan and wagan.com are trademarks used by Wagan Corporation.
MEASURING THE AC VOLTAGE
This inverter’s AC output is a modified sine wave (MSW) 115 volts AC. The
comparison of modified sine wave and household AC is shown in the figure
below.
This modified sine wave has a root mean square (RMS) voltage of 115 volts.
Most ordinary AC voltmeters are calibrated to read “average” voltage and
assume that the AC waveform will be a pure sine wave. These meters will not
correctly read MSW voltage, and will display about 20 to 30 volts too low.
Any multi-meter identified as “TRUE RMS” will accurately read MSW correctly
HINTS
Adding an Extension Cord
If you need an extension cord, we recommend the use of an extension cord
between the AC output of the inverter and the AC appliances. You may use up
to 100 feet of high quality extension cord. A long cord will result in reduced
output power.
Buzz in Audio Systems
Some stereo systems and “boom boxes” will emit a buzzing noise from their
loudspeakers when operated from the power inverter because the power supply
in the device does not adequately filter the modified sine wave produced by the