NM_Desert_Rat
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Re: 3000W Chinese Gensets Info.
Wyatt-S, I re-wired explicitly per your drawing, and also using another suggestion, moving the red lead to the brown lead from the gen, thus eliminating the jumper. The gen voltmeter read ~220V before and ~110V after the mods, so I'm pretty confident that I did it right. I'll restore it to factory config and measure voltages again. Thanks for the input, any other ideas are welcome. Desert555Views0likes0CommentsRe: 3000W Chinese Gensets Info.
Wyatt-S, allpraisebob, et al: I rewired my PP3500 per Wyatt-S's drawing on his profile page, without any noticable difference in performance. Here are the symptoms (same symptoms before and after mod): 1. More often that not, when turning on A/C, the gen rapidly looses RPMs until I turn A/C off. Then I cycle A/C on/off and eventually it will start and run fine. When it decides to work, the A/C comes on quickly (less that 1 sec surge) and will keep on going (two hours sustained so far). 2. Sometimes the voltage reading inside the RV is around 100VAC, with just the inverter on. Sometimes it is around 108VAC. When the RPMs drop (symptom #1), the voltage drops also (<100VAC). When the A/C runs, the voltage will sometimes pop up to 110+, sometimes will stay at around 108, or will sometimes exhibit an oscillation (maybe 1-2 Hz, between 110 and 120VAC). 3. Using my old Sears VOM, unloaded voltages at the gen are line-line 125VAC, line1-ground 70VAC and line2-ground 40VAC. 4. With A/C on, running MW will cause the RPM drop symptom until turning it off. 5. Have never popped a CB. Before the mod, I pulled only from the 110VAC plug. After the mod, I pulled from the 110VAC plug, and made an adapter cable and ran from the 4 prong plug (pulling from the same internal wiring but from a different plug). Same symptoms either way. The gen starts like a champ, and I live at about 5000 feet. Any ideas? Do I have a bad gen based on the voltage readings and inconsistent behavior? Thanks in advance, Desert555Views0likes0CommentsRe: 3000W Chinese Gensets Info.
scottnjenrv, I tried to find a data sheet on the Cochirk (sp) breaker without luck. PowerPro told me over the phone that it is a 13A breaker, I'm sure that I have drawn more than that without it tripping. Out of curiosity, whose wiring mod did you use, MrWizard's or allpraisebob's? Thanks Desert363Views0likes0CommentsRe: 3000W Chinese Gensets Info.
Headhunter, I spoke with the PowerPro rep also and hung up remembering that each breaker is 13A, and that to get full power you needed to wire the windings an parallel externally, using leads from each plug. He couldn't be specific, citing liability reasons. However, it doesn't look like this will work, based on reading many previous posts, without also making some internal mods so that the polarity of the windings can be reversed before making them parallel. Still have not seen anyone post who has actually modified this generator to using both windings in parallel. A data point, ran my PP3500 for a couple of hours this weekend at 7500 ft and probably 90F, used the AC without a problem. At home, have run it for probably 45min with AC and MW, 5000F, 90F+. Both cases using the 110 plug with a 30A adapter. I have to believe that the AC is drawing more than 13A. Desert387Views0likes0CommentsRe: 3000W Chinese Gensets Info.
I have a PowerPro 3500. It will run the AC but not with ref at the same time. I am pulling off of the duplex outlet. My AC has a 20A breaker, but can't find electrical spec. It seems that the unit should be able to power AC and ref at the same time. Given that, MrWizard posted these instruction on p. 48, to allow getting full power from the PowerPro 3500: ~~~ getting into the wiring connections and disconnect the white wire from the red wire hook the br wire & red wire togethere for one leg and hook the white wire and blu wire togethere for the other leg this gives you 110 volts across the circuit at full amperage you would have to disconnect the 220 outlet and install a 20 amp or 30 amp 110 outlet NOTE: this would be 110 across this circuit ..there is NO bonded/grounded neutral the plug will read aprox 55 volts to ground/frame from either side of the plug/ either leg a voltage & phasing check/scope it.. would be advisable before and after doing this with automatic electronic voltage regulation, this should be a quality generator head ~~~ After searching this thread, I (1) can't find where anyone has actually made this mod, (2) am not sure if it is necessary after all to put the windings in parallel, that full power of the unit perhaps is available off of one winding. If anyone has made this mod, what were the results? How exactly was the mod made (inside the unit vs. in plug wiring)? Did you change the breaker? Did you use the 4 prong outlet? It appears that perhaps the only internal mod requred is separating the R and W wiring, that the rest can be made in a "custom" adapter cable using the supplied 4 pring plug and a 50A RV dogbone. Thanks in advance, Desert424Views0likes0Comments
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