50 amp to a 30 and 20 out how to do? HELP!
I'm adding a second ac to my WW trailer, it has a 30 amp service, I am wiring the 2nd ac with seperate wiring and load center and breaker out of the load center will be a plug for the ac. I was looki...
Forum Discussion
westernrvparkowner wrote:Rick Jay wrote:They will actually be 120 degrees out of phase. Electrical service is actually three phases, but only two are generally used at any one time in residential and light commercial applications such as RV parks.CDP wrote:
...discovered his two 25A circuits were on the same phase...
Ok, so there's TWO problems here: same phase (0V differential between L1 and L2) and 25A circuits. They should be dual 50A circuits.
Would you mind mentioning this campground? Sounds like a good place to stay away from. If true, I'd also recommend making a post on RVParkReviews.com.mx727 wrote:Yes, the 240V/120V service is a single "split" phase service, but if you view L1 and L2 on an oscilloscope with respect to the neutral, they WILL be 180 degrees out of phase.
Both 120v legs are the same phase and the system is better referred to as split phase with two legs.
~Rick
Incorrect. They are 180 degrees out. Only one phase of the 3 available phases on the power lines are used for a residence. The single 240V phase is center tapped for the neutral to provide two 120V circuits that are 180 degrees out from each other. 120 degrees wouldn't cancel the neutral current anyway.
Look at those gray transformers up on older poles. They have a single wire from one of the overhead lines and one neutral/ground as inputs.
