3000W Chinese Gensets Info.

A question on the Champion, I am getting ready to do the rewire as outlined by camperdave on page 184 and would like one thing explained in easy layman terms.

What am I gaining by doing this? Everything seems to run fine now with the trailer plugged into the generator using a standard adapter into the 20amp receptacle.

Has anyone measured the output before and after the mod?

Reading this post and seeing all the talk of rewiring makes the reader think we should do this automatically. Should we?

Thanks in advance!
Confused

Let's try the following analogy or comparison to try and answer the question:

Most RVers understand how to hook up batteries for more capacity on their campers. Let's say you have two identical group 24, 85 Ah 12 volt batteries available. You can take the two batteries and hook them in series (positive on one to negative on the other) and get 24 volts at.... 85Ah. That's right, the current capacity did not change, only the voltage. But the watt-hours available went from 1,020 (12x85) to 2,040 (24x85). But wait! What can I run in my RV with 24 volts? Nothing, nada, zilch. Every DC appliance in the RV is 12 volts. So, what have I gained? Again, nothing, nada, zilch. Sure, I can split the load across the two batteries by sharing, but that means I am going to need to split the 12 volt wiring in the RV into two or more circuits. Obviously, this is NOT the way to install two batteries in a camper.

On the other hand, we can take two 12 volt batteries rated at 85 Ah each and connect them in parallel ( positive to positive, negative to negative) and they will still have a combined output of 12 volts, but the Ah capacity will double to 170 Ah. Or, better stated, we have doubled our available power while still maintaining one circuit to supply the load.

The bottom line with either method is to increase the power capacity of the battery bank. But, the only one that makes sense in an RV is the one that combines the batteries in a parallel fashion.

Take this analogy and transfer it to a generator. Think of most of these generators as TWO 120 volt, 12 amp units in one case. If I wire them in series, I get 240 volts and the current remains at 12 amps. But, if I wire these two halves in parallel I keep 120 volts but double the current to 24 amps.

On a RV we have no use for 240 volts. But, we want all the current we can muster to power the current hungry devices like the AC and microwave. So....... we want to have a generator that connects the two parts in PARALLEL.

If the two parts are not connected in parallel, You can only get 1/2 as much power from each individual part. Not good for an RV with a standard 30 amp 120 volt power connector.

So, should you rewire a series connected generator automatically? Only if you want maximum power to be available to a single 120 volt outlet. If you can effectively power your RV appliances with one half of the available power, there is no need to do the rewire from series to parallel coils.

I have never tried to explain this on the forum using the above battery analogy. I don't know if it will help to explain the concept or not, but I thought I would give it a shot.