How to break out rear A/C power from 30 amp service?

Hi,

I've added 2 additional shore power cords. I used male and female plugs mounted in the 120 volt AC distribution panel.

I've added a Microair Easy Start which has reduced surge to under 20 amps.

My last TT was only 30 amp so I added a new 4 space panel (50 amp) and wired the existing panel to the new panel using a 30 amp breaker in the new panel. That made the factory panel a "sub panel". Then I moved the A/C from the old panel to the new panel and wired it up to a 20 amp breaker. I installed a new 50 amp power cord and connected the cable to a 50 (as a main) in the new panel.

I also added a outlet for and electric heater to the A/C breaker. I figured that nobody would ever run the heat and A/C at the same time.

I bought a 30 to 50 adapter so if I camped at a 30 amp only site, I could still plug in but only have 30 amps.

The TT used to trip the main at times but after the "upgrade" all those problems were solved.

I located the new panel where the power cord came into the TT and used the factory 10 gauge "hard" wire for the sub feed. Then ran a new 12 gauge wire (in plastic conduit) under the TT from the new panel to the A/C wiring (I had removed from the "sub") and connected it in a new junction box. Note: If you wanted to, you could use your old power cord for this if you cut the plug off. The wire is overkill but not by much and you already have it.

I un-bonded the sub and bonded the new panel.

I think a had a couple of hundred bucks in the upgrade. The wire was the most expensive item.

It's not a "true" 50 amp upgrade but it gets the "factory installed overload" off your 30 amp "maxed out" panel and really does away with a lot of problems.

The wife could dry her hair while I made coffee with the A/C on and the water heater running.

If you don't understand any of this, DON'T DO IT! LOL

There used to be a company PSRV (Power Solutions RV)..

Now they did it at the generator junction box.. Many 30 amp RV's have a dedicated line at the generator that runs the Rear A/C but .. Any spot along the DEDICATED line to the rear A/C (any wire that goes NO PLACE ELSE.

Mine is a 50 amp RV so I did it at the breaker box.

Orignial

Breaker------- Rear AC (mine)

30 amp

ORiginal Breaker----Transfer switch and generator----A/C

Modified

Mine---Breaker-------Outlet-Plug-----A/C

Yours

Breaker----Switch/generator----Outlet--Plug-20amp breaker---a/C

(I choose to trust the park breakers)

On my 04 fleetwood Flair I have a junction box just outside of my generator. Wires from gen. Goes into this box. You have 12 gague wires and 10 gague wires. The 12 gague run your front ac and the 10 gague run fest of the camper. I took the 12 gauge out of the box and put a female end on the wires that go into camper and male end that go from gen. This allows me to plug my ac into a separate lead cord back to panel box. When you use gen. Just plug the 2 ends together. I have done this for over3 years in fl. Works great.

My 98 Georgetown was 30A and had the rear airconditioner wired with a separate plug. Very handy when staying at someplace with only 30A service. I could use adapters to use the 50A and 30A or the 30A and 20A receptacles. It was wired so the generator would still run both airconditioners.
There was a switch by the breaker box the had to be switched from normal operation or run off the separate plug.
I know this doesn't help you with how to do it but it is very worthwhile to have it wired that way.

The simplest way is to mount a standard dual 120V outlet next to your 120V circuit breaker panel...break the tabs that connect the two sections together. Removed the wires going to the second AC from the circuit breaker panel and attached a 2' male three prong power cord to it so you can plug it into the new outlet. Run short wires from the panel to one of the outlets and a long cord from the other to the outside that you plug into the CG pedestal outlet when needed. Plug the short power cord into which half of the outlet you want it to run off of.

Check out my post from 04/26 and the numerous replies thereto. I should add that life has intervened and I actually haven't finished the project yet.