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Inverters switching off and on repeatedly
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Dick: Was the bad neutral easy to diagnose? How was it figured out? Would a simple 120volt receptacle tester have indicated the problem? Since the POCO having problem is usually the last thing one would expect, was it easy to get the POCO involved?
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A loose neutral or bad neutral in AC power will often show up by one leg showing high voltage and the other showing low voltage. If you load up the low side it will go even lower. The power company can determine if the problem is on your side of the meter or their side by monitoring the power for a week or so.
These inverters do shut down to protect the coach on high or low AC voltage. However, the problem here is high DC voltage. The inverters shut down briefly because of battery voltage going to 30. It shuts down to save the batteries, the DC voltage drops and the inverter cycles back on.
This may or may not be caused by fluctuating AC voltage from the pole. The AC voltage at my barn has not been as stable as I would like it to be, but it is much better since a transformer change at the road this summer.
There are nights when the DC voltage climbs and the AC voltage seems as solid as a rock on both sides. It may be that the voltage reader on the coach is not reading spikes quickly enough. I have stood at my work bench in the barn with my tester on the panel lugs at the barn AC panel and my meter was not showing any spikes there either.
Keep the ideas coming. We have been though all of this a thousand times but fresh eyes may see something we have missed.
Davy
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An old tired Refridgerator compressor can wreak havoc on a coach’s electrical system. Is Your’s original to the coach ?
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As far as I know it is original. I have owned it since March 2008 and there is no indication or paper work it has been replaced.
I am open to ideas. Explain that to me.
Davy
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It’s very easy to diagnose. As Davy said the two sides of the line are significantly different as measured right after the meter (to ensure it’s not something we own). Called FPL and got someone that couldn’t spell electricity. Convinced them to switch me over to someone that knew something.
First truck that came out confirmed the problem. Then FPL sent two trucks. Those guys were sharp. They griped about the fact it happens all the time in Florida were the power is underground and often under water.
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Something everyone should remember. Shore power is often a three way deal … our coach, the campground/RV park or our home, and the power company.
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I had the same problem a bad neutral ,, i had a electrician find the problem . it caused all kinds of problems … mine was between the meter and the CB panel.. i had the meter base replaced by the power company and I put in a new 200 amp panel! at that time i did not have any surge protection … this happened in the late 80s
1999 XLV X-6872, liberty #440 -
I had a bad neutral also, it was driving my inverters nuts, it was my shore power reel, replaced the reel everything fine. Darrell
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