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I'd guess that something isn't working in the field flash circuitry. A relay, or maybe even one of the gangs on the start switch.

Got it! I had a few minutes to drop some of those 50 ohm resistors across the secondary side of the CT; it worked out perfectly! According to the math, a 38 ohm resistor is the ideal size (a 40 ohm would be just about perfect). That would drop the meter readings by about 35%. Since all I...

I've been mulling this over as I work on another project...and I think I had a conceptual error on how the CT works. I had based my little resistor network assuming that the CT produced a voltage that related to the amount of current flow through the 12 leads...and that voltage was what was...

Well...the resistors and terminal board showed up on Friday. I dove into the project this afternoon...pretty simple little mod...under an hour to make all of the connections. It didn't work :doh: Well..the theory was sound, anyway. Its just that my resistor values were WAY off. I still...

I had the same reluctance with my first MEP! In fact, I actually planned to add a couple of time delay relays so I wouldn't have to hold the switch in start so long after the set actually started. I have gotten used to it now, though. Your speed switch should disengage the starter motor almost...

I'll be in North Carolina this summer...if you still don't have it done by then I'll do it!

I might be a little off here (I often am) but I believe that, since the value of the resistor that I chose was roughly 10% lower than whet I needed, the meters/trip setpoints will remain 10% of the difference (10% of 35%) off. This means that when the generator is operating at actual 100%...

All sorts of data! Hooked up my ammeter and voltmeter to the secondary side of the CT and got some good numbers. There were actual measurements: .65A (CT secondary) 5.61V (CT secondary) 100% (% power meter) 46A (clamp on ammeter reading to load bank) .73A (CT secondary) 6.1V (CT secondary)...

Since it was such an amazing day here in the NW (68 degrees and not a cloud in the sky!), I wheeled the -004 outside and hooked it up to the load bank. I adjusted it for a steady 50A load single phase, and then used my clamp-on ammeter to check each of the generators 12 leads. Current flow...

I had a little time last night to mull over the schematics and I came to a couple of conclusions: We moved 3 leads under the recon board to bring voltages back to normal; X8HH16B from T8 to T11, X8A16B from T8 to T3, and X12EG16N from T12 to T13. When converting back to 3 phase 208, X8A16B...

I have seen them on both top and bottom; the last batch of -004's I got were all on top. I honestly haven't looked closely enough at prior sets to know where the bars "usually" are...seems there are quite a few with the bars on bottom. There are certainly more professional-looking ways to...

The video I posted should be easy enough for just about any average wrench turner to follow; I do plan on doing some modifications to the CT in mine to change setpoints and meter readings. After some thought, I believe that it will be much easier to add appropriately sized resistors inline with...

Here is the new updated video, complete with the modifications to the underside of the reconnection board:

Kind of; they accomplished the goal of lowering the ammeter and % power meter readings, and raising the trip setpoints for the overloads. But...it was a little too much. The meters began to read about 10% too low, which I'm really not a fan of. I decided (for now) that the best thing to do is...

Haven't forgot about it...just haven't had the time yet. Hoping to have it up this coming weekend...

Probably best to start a new topic on this as it isn't really related to the single phase mod...

You need to do both; the buss bar cut/jumper mod in the video wire the 12 leads from the generator in zigzag configuration. The lead swaps in post 40 re-wire the voltage regulator/exciter, thermal watt converter, and many of the control box components to work properly with the zigzag mod. If...

The conversion for the -005 should be exactly the same as the -004; the schematics I used for the -004 cover both models. This de-rating thing can be a complicated question. We have a few things to worry about: 1. The current through individual generator windings. I have not yet taken...

If you do the modification as I have described, your 2 "hot" legs are L1 and L3, and the neutral is L0. As the gen sits right now (without the CT mod I am planning), it could be used in single phase with no problem. The way the overloads work in these sets is different than a common thermal...

Sure does make them more useful for the person looking for a backup gen for their home! I got the chance to put about 58A (14kW) on the set for about an hour tonight; no issues at all. In fact, voltage varied by less than 1 volt from no load to 58A, which is actually better than it does in its...