Mark,
Let me give you another reason the 50amp could be tripping that has nothing to do with ohms law. Our Diplomat 40PDQ has the closet with the mirrored sliding doors at the rear wall of the coach. Our main AC input breaker panel is located inside that closet at the top on the driver's side. We were having some 50 amp main trips that did not make any sense at all. It took awhile but I finally discovered that sometimes the curb side closet door would catch the 50 amp breaker, turning it off, when we opened and closed the door. I fixed the problem by limiting about 1.5 inches of the door travel by inserting a piece of wood in the bottom door track. This may not be your problem but thought I would throw the experience out there as it may help someone with a coach like ours.
By the way, the most common cause of circuit breaker trips other than an over load is heat developed at the breaker by lose connections. What causes a breaker to trip is heat produced by the current flow. Heat produced at the breaker in addition to the intended heat at the trip element will de-rate the breakers trip value. Loose connections produce heat because of additional resistance to the current flow. This additional resistance will not produce much heat at low current flow but when demand is high, like when multiple air conditioners are running, the heat can become significant.
Bob
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Sixpack98:
Over about 3 days the dual 50 amp breaker has tripped on our MH. Anyone else ever see this happen? I talked to Monaco twice and they were little help. They said one of the AC's was probably overloading but when I asked "Wouldn't one of the 20A AC breakers trip first?". They said both AC's are on the same 50A line which I knew they were not. Since the IOTA is before the breakers I don't think that is causing the problem and the EMS seems to be working correctly. I did find the Neutral wire loose from the neutral bar to the 120v side of the control board. Since then I have not had the main 50A breakers trip which does not make a whole lot of sense. Voltage monitor said the 2 120v lines were about 118v to 120v in both cases. Event happened the last day at one campground and the second day at another. Can someone shed a little light here to help me figure this out?
mark </div></BLOCKQUOTE>
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