Low Voltage on One 50A Leg
In several campgrounds I've noticed that my 50A legs were "unbalanced". For example, unloaded, L1 at 105V and L2 at 117V. What's causing this?
Forum Discussion
Gdetrailer wrote:DrewE wrote:
Such imbalances can also be caused by poor neutral connections; when the neutral has a higher resistance than it should, its voltage tends to float based on the relative loads on the two legs. (The extreme version of this is an open neutral, which generally causes lots of problems and lots of expense in a short period of time.)
If you're seeing such voltage variations pretty consistently, it would be advisable to verify that your RV's power inlet connections, transfer switch connections, etc. are in good shape and properly tightened down.
MEH.
A "poor Neutral" most likely going to cause more other collateral damage depending on just how much draw is on one or both "legs".
As long as both L1 and L2 amperage is equal, then the voltage on both legs will also be equal.
Draw more on L1 and now you get an imbalanced voltage.
I suspect what the OP is seeing is an issue in the campgrounds electrical system coming from MORE 30A 120V usage..
Most pedestals will by default have the 30A 120V outlet on the SAME "Line" and most likely that default IS L1, and more folks will be hooked up to the 30A outlets..
Hence the reason OP is seeing the voltage mismatch..
Bingo, you win.
