Wagan SlimLine 2000W 12 VDC to 115 VAC Power Inverter - Manual (Page 6)

Slimline ™ Power Inverters by Wagan Tech ®
www.wagan.com
5
MEASURING THE AC VOLTAGE
This inverter’s AC output is a modified sine wave (MSW) 115 volts AC. Your
household AC output is pure sine wave. The comparison of modified sine wave and
household AC is shown in the figure below.
(Pure sine wave)
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.
PRODUCT USAGE
FUSE