How are these things wired
First off, I know these won't work while plugged into a ground fault outlet AND it would only supply 60 amps total (as opposed to 100 amps for a regular 50 amp outlet. What I'm wondering is; how are ...
Forum Discussion
KD4UPL wrote:
You have a great understanding of how they work.
I would make sure your 2 30 A outlets are on opposite legs. If you measure between their hots you should see 240v. Otherwise, you could potential overload the neutral wire in your RV.
Electrically this is absolutely correct. If you turned on enough load, you could load the neutral to 60 amps vs a maximum of 50 amps for "real" 50 amp service. This is because with 50 amp service the neutral only carries the DIFFERENCE between the draw on L1 and L2.
Reality-- it would be very rare in a CG pedestal with only 30 amp service for the two 30 amp outlets to be on "opposing" hot legs. If they pulled the extra wire, they very likely would have installed a 50 amp outlet!
So, yes, some attention needs to be paid to total amp draw. Remember 50 amp is TWO 50 amp hots, so 100 amps total. This 30/30 to 50 offers 60, a single 30 offers 30. RV math.
