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★★★★★
Power Max XP4400E & XP4400 Generator
By Ernie, Retired Journeyman Lineman. The XP4400E is well worth the extra cost over the XP4400, as starter rope must be pulled out at an angle.
This is an excellent generator for the money. The voltage regulation is excellent. Amazing output for it's size along with being very quite for the output that it has. The discription Amazon has for it is great, so many items are not discribed well enough. There is a couple points I want to share with present owners and would be owners.
(1) The voltage selector switch not only changes the voltage monitor 120 to 240 but it's main function is tap changing, this being the reason it must not be switched unless breaker is off (open) or generator shut down. It parallels the two power windings when set for 120 to the 120 sockets and the 120-240 socket. You can draw full capacity fron the 120 sockets or at the 120-240 socket from terminals Bu & R, the W terminal has no voltage so 240 is not available now. (Refer to owners manual wiring diagram page 23 or 24)
Set for 240 the switch series the two power windings and now the 120 sockets have only one power winding applied and so half capacity is available here, 1750 watts from either one but only 875 watts each if both are used. The 120-240 socket now has both windings in series and now has 240 from terminal W to Terminal R and will have two 120 circuits, one from terminal W to terminal Bu and the other 120 circuit from Bu to R. Full capacity is available with the 240 voltage and half capacity from each of the 120 circuits. (Bu is the common terminal to both sockets)
(2)It isn't specified the engine has a steel cyinder sleeve and I don't think it does as I run it for 6 hrs. and changed oil and the oil in the drain pan was pretty well loaded with aluminum and silicon swirling around. I will change again after 12-14 hrs. and then every 20 then on. A filter would have been a boon for engine life, but be diligent and change oil often and it will run a long time.
I think some have gotten generators and done them in early because they didn't change oil in time. Very, Very important because the cyinder is aluminum and no oil filter. More power to all, Ernie Wireman
September 2008 · Patio Lawn and Garden · verified purchase