A/C on generator question
I'm new to the forum and, well, fairly new to the RV world but hope someone can help me understand something. (And I've done a good bit of research via Google, but still haven't found a straight answe...
Forum Discussion
DelawareRick wrote:
Thanks for the replies so far everyone - they've certainly helped me understand this better. Or at least I think so.
dahkota - Water heater is off.
dclark - Neither AC runs if EITHER generator CB is off (see my troubleshooting steps below)
dougrainer - Your info was particularly useful. I did some troubleshooting and found the following:
***NOT SHOUTING, JUST WANT TO SET MY COMMENTS APART FROM YOUR TEXT***
With only 20 amp generator CB off: BUT THE 30A IS ON?
Both AC units have no power
All outlets have NO power SUGGESTS DOUG'S COMMENT OF LOADS REVERSED IS THE CORRECT ANSWER
No coach lights
Slide does work
With only 30 amp generator CB off: BUT THE 20A IS ON?
Both AC units have no power ***NO*** POWER??? YOUR FIRST STATEMENT SOUNDS LIKE BOTH WERE TRYING TO RUN ON THE 20A SIDE OF YOUR ONAN! TYPO HERE???
All outlets have power PER DOUG'S COMMENT, SEEMS MOST OF THE COACH IS CONNECTED TO THE 20A SIDE OF YOUR ONAN
No coach lights
Slide does work
Possibly unrelated: When one of the generator CBs is off (I forget which one) the "levels" button works and shows me tank, propane, etc levels. When the other CB is off, it doesn't. I only mention it because I wondered if power is being turned off to the thermostat (since it's in the same overall control panel) and that could be causing a problem. Again... new guy here... so might be completely off course.
IS THIS A 30A OR 50A? HOW MANY PRONGS ON YOUR SHORE TIE CABLE WHERE IT PLUGS IN AT THE CAMPSITE? 03 PRONGS MEANS 30A, 04 PRONGS MEANS 50A.
I'VE SEEN 30A COACHES WITH 5500 GENNYS. THE 30A SIDE OF THE GENNY TAKES OVER ALL BUT THE SECOND A/C AND THAT'S HANDLED BY THE 20A SIDE. THAT MEANS YOU CAN RUN BOTH ON GENNY BUT NOT ON 30A CAMPGROUND PEDESTAL POWER. WHICH IS WHY THERE MAY BE A FRONT/REAR SELECT SWITCH, ONLY FOR A/C.
TO RUN ON GENERATOR, DO YOU HAVE TO PLUG YOUR SHORE TIE INTO A CAMPGROUND PEDESTAL-STYLE SOCKET? I'M THINKING THAT ON CLASS A, PROBABLY NOT, YOU HAVE AN AUTOMATIC TRANSFER SWITCH. GENNY COMES ON LINE, ATS DISCONNECTS SHORE TIE CABLE AND POWERS COACH FROM GENNY. IF YOU HAVE AN ATS, AND ITS CONTROL VOLTAGE IS COMING OFF THE 20A SIDE AS DOUG SUSPECTS, YOU WOULD NEED BOTH 20 AND 30 ON TO SEE POWER THROUGHOUT THE COACH. ONLY PROBLEM, AS DOUG SAID, THE LOAD YOUR COACH DRAWS IS BEING SUPPLIED OFF THE WRONG (20A) SIDE OF YOUR ONAN.
