marginal park power on hot days

2ACs per rig has to get really close to averaging out to 4kw per site, 75% load factor on the transformer is a bit too close for my blood, especially since there's going to be other loads like water heaters, refrigerators, microwaves, etc. I mean since you get murdered on peak usage as a commercial user I can kinda understand why the park wouldn't want too much capacity, but pushing the equipment that hard is why we run into these undervoltage conditions.

Gdetrailer wrote:

CA Traveler wrote:
CGs like houses are usually wired to supply about 40-50% of the pedestals amp rating. Hence every summer low voltage is common with lots of A/Cs running.

In my experienc 50A pedestals are not likely to have low voltage due to better wiring and 12000W rating vs 3600W for 30A.

????

No, not true that CGs like "houses" are wired to supply 40%-50% of the service rating.

If it was there would be many more service entrance wiring fires.

Actually, the NEC code allows for derating factor and that is common. And the panels main CB would trip to provide protection from overloading and fire.

Here are 2 examples:

My 2006 house built to code has a 200A panel or 48,000VA max and of course the main CB would trip if either leg exceeds 200A. Adding all of the single and dual CBs in the house panel yields 97,000VA or 51% derating..

In 2007 I was in a new CG that had a 100,000VA transformer supplying 18 50A sites. The sites totaled 216,000VA or 54% derating. Another view is that the sites are limited to an average of 23A@240V not 50A or 46A@120V not 100A.

My house has never tripped the main CB and I’m confident that the CG has never had 18 50A rigs averaging more than 46A@120V. Otherwise it would be extremely and wasteful and costly for everything from the utility to the transformer to supply 100% of the power.

wanderingaimlessly wrote:

time2roll wrote:

wanderingaimlessly wrote:
And think how much better it will be when 30% or more of the folks in there are trying to charge their electric tow vehicles.

You mean pulling 20 amps off a 50 amp connector from midnight to 7AM?

Do you really think they will go out at midnight to connect?
They will start connecting as soon as they arrive and then complain that their AC isn't working, anything but admit it's their own doing.

Car has a timer. Will be sound asleep.

The voltage will be the same at both the 50 & 30 amp receptacles.

CavemanCharlie wrote:
My Travel Trailer has a 30 amp plug. I've had good luck at some campgrounds by buying a 50 amp to 30 amp cheater plug and plugging into the 50 amp receptacle.
..........

That’s not a cheater. Simply a 50 to 30 adapter. Many 30 amp people do that as the 50 amp receptacle is often better.

The vehicle will probably be programmed to start charging then since that's when they'll charge at home, it's not like as soon as you plug in they start pulling max current.

time2roll wrote:

wanderingaimlessly wrote:
And think how much better it will be when 30% or more of the folks in there are trying to charge their electric tow vehicles.

You mean pulling 20 amps off a 50 amp connector from midnight to 7AM?

Do you really think they will go out at midnight to connect?
They will start connecting as soon as they arrive and then complain that their AC isn't working, anything but admit it's their own doing.

wanderingaimlessly wrote:
And think how much better it will be when 30% or more of the folks in there are trying to charge their electric tow vehicles.

You mean pulling 20 amps off a 50 amp connector from midnight to 7AM?

My Travel Trailer has a 30 amp plug. I've had good luck at some campgrounds by buying a 50 amp to 30 amp cheater plug and plugging into the 50 amp receptacle.

I almost always keep the power converter shut off, (I charge my batteries at home before I leave), I run the fridge on propane, and my water heater only has propane.

I am just a weekend camper so I am never out camping for more then a few days.

And think how much better it will be when 30% or more of the folks in there are trying to charge their electric tow vehicles.