Generator Sizing

aguablanco wrote:
I have been looking for a generator for our TT for a while now and I have a question I hope I can get some answers to. My trailer will most likely need around 3.5k watts to run everything including AC. My question is, if I buy say 4k watts and run everything at once, the generator will run at full RPM to make that happen. 3600 RPM would be fairly noisy as I am not going to buy the Honda's etc. So, if I were to buy say a 6000-7000 watt generator wouldn't that then run at around half the RPM's and be somewhat quieter? Also a little better gas consumption rate? How far off is my thinking?
Thanks,
RichH

Rich, there are generators and there are inverters. A generator runs at full RPM all the time (unless it's one that idles down with no load); an inverter runs at an RPM needed to support the load demanded. The Yamaha 4k generator runs at a slow 2600 RPM, so makes it more quiet than other standard generators; IIRC, there are several others that are the same way, but they are straight generators, not inverters. Inverters are also a lot more efficient than straight generators.

You might think about 2 3k inverters, paralleled together. Several companies make them.

Lyle