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I re-ran the generators all with 3 Kw loads. I'll update the first post with the pics at 3 Kw and THD values at 3 Kw for each. Time for a 🍻

Used the scope to do an FFT on the waveforms, measured the amplitude difference between the fundamental frequency and the harmonics. Then run that thru a spreadsheet to calculate THD.

I'm redoing that test. Will revise original post when I can today.

Added to the original post

I posted the AC waveform pictures and THD calculations results in another thread. ----> AC Waveforms and THD

In another thread people were interested in how clean the AC output was from various generators as compared to utility power. Below is a compilation of various AC power source waveforms and Total Harmonic Distortion (THD) calculation results. Function generator set at 60 Hz. "Ideal" AC...

I've got a converted 831 and an oscilloscope to get a vaveform shot. Will take that in the coming days and post it up.

Mecc Alte should have included the J609B adaptor plate. Knuckleheads. Several have purchased from them and all received the plate. Wow the gen head price has gone up! It was about 350 shipped last time I bought one from them a 2-3 years ago. Be sure to connect the wire harness leads supplied...

A good hardware store should have the fitting you are looking for. Remove the plug and take it with you to the store so you get the right size.

MEP-803A 10 KW Single Phase 120/240 MEP-1040 10 KW Single Phase 120/240 with 60 Hz Governor Control

Actually, it is possible to convert a 15 kw 804 to single phase. It's just done a bit differently than a 12 wire gen head conversion. A few people have done it and can pull 15+ KW.

It's designed to run continuously, under full load in 120F air temperatures.

Also the L3-L1 L3 position on the AM-VM switch will cause the %Load meter to register the TOTAL load on the generator, not just what's connected to the L3 lug. It registers the load on L1 & L3 combined.

The overload was/is probably dirty contacts inside S8. When in 120/240 setting S8 connects R12 & R13 in parallel for an effective resistance of 3.75 ohms. The combination of R12 & R13 form the burden resistor across CT3. If S8's contacts for R13 paralleling aren't making contact the effective...

If you mean schematic, no.

The reason the readings are off is because the CT's and K8 are connected in parallel to the resistors in the circuit.

It seems the main control board is the culprit when that happens. Many people experience that same fault if they are in a high humidity environment. It's related moisture genning into the numerous un-sealed potentiometers on main control board on the engine side of the inverter. Some have had...

A replacement for #48 is a FSOT2011E7R500JE A replacement for #49 is a FSOT2011E20R00JE A replacement for #50 is a FSOT1011E1K300JE

To check R10, 11 & 12 you need to disconnect 1 of the wires from each resistor so that 1 terminal on each has no wires on it. I think you'll find they are OK. The original resistors are no longer made. The manufacturer does make a newer version that will mount up just the the originals. I'll...