Lost half of the 120volt circuits

[Hooligan]

Lost power to half the AC circuits...

TV, appliances, Front Ac, and Fridge had no 120volt. Microwave, Rear AC and Engine heater had power?? (My system does not have "load Sharing")
On the main CB panel, every other CB had power.

The Main 50 amp CB was only connecting on one leg, due to corrosion. Cleaned the panel bus contacts, coated with dielectric, and replaced the CB, whose contacts had overheated...

I did not know the panel connected that way and it took awhile to troubleshoot.

Each leg comes into a separate buss. and CB's alternate as to which buss (Leg) they connect to. The photo on the right is the back of the main CB and the one contact is burned.. The CB's just snap in on the "Square D" panel.

[Tom3205]

Reset the ground fault in the bathroom. That may have tripped.

[Hooligan]

Thanks Tom:
Problem was fixed by replacing the CB and cleaning the buss connector on the MH Main panel.. (Wanted to post in case someone else had the problem)...

Ground fault was the First place I looked. Even checked the Circuit breakers in the Sticks&Bricks. (50 amp service to the MH). All the wires coming into the MH had power, was losing it in the panel..

[marc080]

Try looking at your inverter it my have tripped a breaker. Marc

[Gary - K7GLD]

Originally Posted by marc080

Try looking at your inverter it my have tripped a breaker. Marc

You guys just don't get it!

OP has already FOUND, and FIXED the problem, and was just alerting others to what the problem was, and showed his fix!

As he has already posted:

Problem was fixed by replacing the CB and cleaning the buss connector on the MH Main panel..

No further "helpful suggestions" as to "locating" the problem needed, CAPEESH?

[dsbike]

OP thanks for the advise.

Maybe you should check the Flux Capictor also.

[wa8yxm]

To the Original poster: Congrats on finding and fixing the problem... And on learning a bunch in the process. Your description of the breaker panel is how my Progressive Dynamics panel is wired too... right down to the Square D breakrs it uses.

I will tell you a few other places you find screws too.

Automatic transfer switch

Inlet on side of motor home

Outlet on end of shore cord

If the plug on shore cord has been replaced.. IT.

(OEM's are usually welded)

I have never found a screw loose in a transfer switch,,, but then I've only seen two of those.. both mine.

Have in all the other locations.

[Ray,IN]

Hooligan, thanks for the reminder! I've encountered that in our rental house, but haven't thought about the RV service panel.