USER’S MANUAL — Please read before using this equipment.© 2007 Wagan Corporation.All Rights Reserved.Wagan and Wagan.com are trademarks used by Wagan Corporation.7LEFT MIDDLE RIGHTGROUND NEUTRAL HOTg. Ground Terminal.This connection is for connecting to a 6 gage insulated ground wire. Do notdirectly connect this ground connection to the Negative DC terminal. This isdescribed in the installation procedure.2.2 Rear Panela. High-Speed Cooling Fans/ Ventilation WindowsThe fans automatically operate when the internal temperature of the inverterrequires cooling. Always allow free air flow – do not block the vents.b. Four Positive (+) DC Input Terminals, Four Negative DC (-) InputTerminals.All Negative (-) and Positive (+) DC terminals should be kept insulated to protect8000W Power InverterBy Wagan Techwww.wagan.com8from accidental short circuits. Cable “boot” insulators are supplied that will coverthe cable and terminal. If any positive (+) DC terminals are not used they shouldalso be kept covered. All Positive DC terminals are connected together inside theinverter. All Negative DC terminals are connected together inside the inverter andconnected to the chassis. It does not matter which Positive DC terminals are used.Similarly any negative DC terminal can be used.Multiple DC terminal sets allow one to four sets of battery cables to be connectedto the inverter. This allows multiple, more readably available flexible cables to beattached to the inverter.3.0 POWER INVERTER OUTPUT WAVEFORMThis inverter’s AC output is a Modified Sine Wave (MSW) 115 volts AC. Thecomparison of Modified Sine Wave and household sine wave is shown 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 assumethat the AC waveform will be a pure sine wave. These meters will not correctlyread MSW voltage, and will display about 20 to 30 volts too low. Any multi-meter identified as "TRUE RMS" will accurately read MSW correctly.