Circuit Breaker

30A adapter feeds both hot legs on 50A side of adapter.
You should have 110V on both bus bars in your AC Panel.

Thats what I was thinking, But I have a spot in my AC panel that has no load ?

Look and see if your load bar is a two piece design.

This is a schematic for the standard RV30A-50A adapter



When wired in with your 50A trailer side it may look like this


Both 50A legs inside the trailer power distribution center is being fed with a 30A source. You may not be using a standard RV30A-50A adapter. Not the two L1 - L2 legs must be shorted together

Roy Ken

RoyB wrote:


Both 50A legs inside the trailer power distribution center is being fed with a 30A source. You may not be using a standard RV30A-50A adapter. Not the two L1 - L2 legs must be shorted together

Roy Ken

IF both hot legs of 50A weren't jumper----half of AC panel would be dead, not just one position.

OP you need to remove that CB and test for voltage on the bus bar at that CB spot.

Bad line contacts/clips on CB OR improper installing CB would result in that CB not having voltage on load side.
One position on bus bar not having voltage is a head scratcher :H
Unless lugs are broken/bent on bar and CB will not engage

Have you checked for an open neutral on your pedestal?

Lets rephrase the question correctly. You should state--"I have one breaker that has NO VOLTAGE on it, but the rest do. NOT state a LOAD. A LOAD is a measure of power that the breaker is supplying. Do you have an EMS system? A 50 amp breaker panel in the RV has 2 separate metal panels the breakers connect too. They usually alternate so breakers in a row, every other one will be on the one 50 amp side. They do NOT have all one side supplying 1 50 amp feed. So, if you have a breaker that has NO power out of it, verify that there IS power on the flat supply bar the breaker snaps in to. You have to remove the breaker to do that. Did this breaker have power on 50 amp service before? WHAT made you check for a problem? What appliance or outlets were dead that made you check? Have you tried on the Gen set to see if power is there? Also, depending on HOW the system is wired, IF you have a large Inverter/Charger, THAT breaker may be the supply from the Inverter/Charger. Check your Inverter/Charger breakers if you have one. Doug

Took it all apart and checked it,put it back together and now it works. who know!

ROADSTARJR wrote:
Took it all apart and checked it,put it back together and now it works. who know!

What did you take all apart?

IF it was removing CB and then reinstalling it....sounds like it wasn't seated into bus bar lug/clip.

Yes, it was the CB panel to Electrical outlets