Reply To: Inverters for Computers

[MrEnergy]

Yup. It all depends on the harshness of the waveform. The shape of the waveform makes a huge difference. Let’s see an oscilloscope shot of your output and that will tell us why. Or the model number of the inverter, I may have one here. Are they all DR2424’s? All motors will be about 10-15 percent less efficient on modified, and that power loss will show up as heat, but in general they should run fine.

Nowadays the sinewave inverters are so inexpensive that it’s no longer as much of a cost savings to go with modified, but back in the day it was for sure. I still run a small DR12 series on job sites once in a while, but the house has been changed over to a SW4024 since I got it for free damaged and repaired the circuit boards.