Try using a multimeter to measure the voltage. When the third RV plugged in it may have caused the voltage to drop and with the lower voltage the 50amp rig would change it's current draw.
I suspect (correct me if Im wrong) that these feeders to all the pedestals come from a 2 wire system just like a house but higher ampacity so essentially every other breaker is on the same line.
Finally Fulltiming wrote: The rig that keeps popping the breaker is 50 amp equipped & is connected to a 30 to 50 adapter. Maybe the adapter isn't working right & it's drawing too many amps? He's already tried the other outlet but it pops also.
The adapter does not restrict what a rig can attempt to draw. That is the purpose of the CB.
I would suspect that two of the receptacle breakers are being fed from the same line upstream. The other two are likely the same. That being the case the second rig is adding additional draw and likely dropping the voltage to a level that is affecting the current and causing the trip condition.
Bobbo wrote: I really doubt that the new guy has anything to do with it as he is on a different breaker altogether.
He will be on a different breaker, but may be on a common line causing voltage drop and the above overload condition.
I was born in Great Falls, Mt. My parents moved when I was 5. I found them when I was 10 - they were in California.
Bobbo wrote: I really doubt that the new guy has anything to do with it as he is on a different breaker altogether.
He will be on a different breaker, but may be on a common line causing voltage drop and the above overload condition.
This is true. That is why entire campgrounds can have low voltage. It is not just limited to a single pedestal in every case.
Bobbo, Linda and the furry kids (1&1/2 German Shepherds)
2007 Winnebago Outlook WF331C on a Ford E450 Super Duty Chassis
2010 Subaru Forester w/BlueOx baseplate & Ready Brute Elite towbar
CG's with 30A only and especially older CG's often have low voltage especially with winter electric heater or summer AC usage.
Actually I've never encountered low volage with a 50A pedestal. Newer codes, larger wire, less common pedestals are factors. Also in my experience there is less wear on a 50A pedestal plug vs 30A.
In one well designed CG there was a 100KVA transformer feeding 18 sites. That means each site can draw an average of 100K/120/18=46A before reaching that limit. Sure 18 50A rigs could exceed the 100KVA limit but the chance of that happening is small. It's even smaller if there are 30A rigs or empty sites.
Offline
