JRscooby wrote:
theoldwizard1 wrote:
JRscooby wrote:
I wonder if it would be possible to chose the most expensive, easiest damaged equipment, and feed it thru the 30 AMP SP? Feed the SP off 1 leg of the 50 AMP?
I guess, but as I said, connecting the two legs together will not damage any 240V appliances, if you even have any.
If you have two AC units, they MIGHT run, but they will likely never be able to start at the same time.
Worst case scenario is that you will trip the 30A breaker at the post.
I'm not sure you are standing under what I'm asking. Plug into the 50A outlet on post, to power panel in RV. Come out of that panel with a 30A SP, for the most expensive, easiest damaged equipment. Most stuff, the chance of a surge damaging, vs cost to repair is a safe gamble. Look around the house, is most of the stuff protected by surge protector?
I think you still do not under stand a 50AMP RV outlet. I has one shared neutral. This share neutral only has to carry the current of the difference of load between to two hot leads. So it one side is pulling 20 amps and the other 30 amps, the neutral only has 10 amps on it. If both sides have 30 amp loads neutral has zero amps of current flow. Take neutral away and things get damaged.
"Electricity always follows the path of least resistance. In the case of an electrical service it always tries to go between L1 and L2 whenever possible. If you have a 20 amp load on a 120 volt L1 breaker and a 15 amp load on a 120 volt breaker on L2, 15 amps of power will shuttle back and forth between them. They will be in balance and your ammeter will read 20 amps when testing on L1. When you test on L2 you'll see 15 amps showing on your meter. If you were to clamp your meter onto the neutral wire you would see 5 amps displayed because the neutral wire only carries the imbalance between L1 and L2. If you had 20 amps running on each phase you would see zero amps on the neutral line. That's because the AC power tries to shuttle back and forth between L1 and L2. That is what is called a balanced load. You try to achieve this when locating your breakers into the panel because it minimizes the current flowing through the power company's electric meter but it's not always possible. If everything was on one side you'd be pulling 40 amps on one phase, zero on the other, 40 amps on the neutral, and 40 amps on the electric meter so you try to balance things as much as possible."
https://www.rvtechmag.com/electrical/chapter3.phpThe best advice is to install a high quality EMS like the PI unit.
This same issue exist in commercial buildings. We had an electrican lift neutral on a circuit that feed computer equipment in one of our bank buildings in downtown Seattle back in the late 80's, it fried the equipment and the Electrical contractor had to pay for the equipment.
