Low Voltage shut downs with my Progressive EMS

[blw2]

went out to a local SP for one night over the weekend.  not long after arrival and plugging in, trying to cool the RV back down after shutting down the genny at the ranger's station.

I've never had so many shut downs before...with the heat and all the AC's running, the voltage was pulled down pretty low... floating around 107 VAC to maybe 109 VAC (lower than 108 V and it shuts down)
It was annoying, but I know it was probably saving my stuff a bit...but still... kinda hard when all around you your neighbor's AC's are ticking away...

So after several shut downs, I figured all this start and stopping couldn't be good, even with the delayed start-ups...so I shut the AC down a while and ran the chassis engine and dash air.  Guess I could have run the genny but I hate to run that thing and disturb a campground....

Anyway, I would have switched over to the 50 AMP outlet with an adapter, but sadly this was a 30 A only park... (actually I probably would have plugged into the 50 Amp initially had it been available)
so, it crossed my mind to wonder if the 20 A outlet would be on the same leg as the 30 A....maybe it wasn't getting pulled down as much???
so I put my meter on it and it seemed to be floating around the same.

After a short time, it was stretching into late afternoon so I tried again, and things were better.

So my question:
    I know there's probably not really a standard, but does that ever happen where the 15 or 20 AMP outlet in a CG pedestal would be a different leg or even a different circuit from the 30AMP?

 

[Ghostman]

It most likely will not be any different. If there main service is being dragged down it will be all of them. We ran into this on vacation at interior SD. It fell to about 107. It was just one day. It was hot. We just ran generator for a couple hours until it cooled off and voltage came back up.

 

[Optimistic Paranoid]

Or you carry a Hughes Autoformer . . .

 

[Lou Schneider]

If the park is 30 amps there is only a single hot line, plus neutral and ground, brought up to the pedestal breaker(s).  It would make no sense for the park to go to the bother and expense of running a second hot line to feed the 20 amp socket seperately.

 

[lynnmor]

Or you carry a Hughes Autoformer . . .

With campgrounds being fuller than ever, and the RV's getting larger, folks should seriously consider getting an autoformer.  All those other campers running the AC were totally clueless.  I checked for reservation possibilities at campgrounds for this holiday weekend and found all were totally full in a 100 mile radius.

 

[docj]

Or you carry a Hughes Autoformer . . .

To save a few bucks, I bought a 30A Autoformer because this sort of problem seems to be greatest at older, smaller 30A parks.  I don't need it often, but, when I do, it's invaluable. 

 

[John From Detroit]

The solution

Park---RV inlet--Hughes Auto-former--Progressive Industires HW-50C-- Rest of RV. (ATS on a motor home main panel on a trailer)