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Old 05-24-2019, 07:26 PM   #1
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Electrical Question

I have been plugged into 30A power for the last 3 weeks. My coach is a 50A unit. Today, the residential fridge and our center AC units shut off. According to my remote, only 14A were being drawn. Throughout the day, fridge has powered off 3 times. So far, it has come back on every time. I believe the problem lies in my inverter. It is a Magnum 2812, 2800W unit.

Any ideas? Thanks.
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Old 05-24-2019, 08:13 PM   #2
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ask the campground you are at, if there has been an issue with their power, it is a holiday weekend and there is more likely lots of units checking in and 'straining' the campground grid.
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Old 05-24-2019, 08:32 PM   #3
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I doubt the AC is running off the inverter.
I would suspect the CG power, the CG pedestal has corroded connections or your 50 to 30 amp adapter has a problem.


Of course IF the AC is on the inverter then yeah I would say it is suspect.
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Old 05-24-2019, 08:32 PM   #4
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sounds like your energy management system is doing its job in preventing possible overloads. and tripping breaker
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Old 05-24-2019, 08:35 PM   #5
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Do you know if you have an Energy Management System (EMS) that sheds loads if too much power is be consumed.

If I'm plugged into 30 amp it senses this and will shed loads accordingly.



Other possibility is if our coach has a surge protector that also senses low voltage. If my voltage drops below 108 volts (? I think), it will shut the power off until it corrects itself.
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Old 05-24-2019, 08:35 PM   #6
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Have you checked your source, incoming power to the converter/inverter. And check voltage out, A VOM/multimeter is your friend.
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Old 05-24-2019, 08:36 PM   #7
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Quote:
Originally Posted by doublechevy View Post
sounds like your energy management system is doing its job in preventing possible overloads. and tripping breaker
EMS does not trip breakers.
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Old 05-24-2019, 08:37 PM   #8
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Quote:
Originally Posted by AE Wanderer View Post
I have been plugged into 30A power for the last 3 weeks. My coach is a 50A unit. Today, the residential fridge and our center AC units shut off. According to my remote, only 14A were being drawn. Throughout the day, fridge has powered off 3 times. So far, it has come back on every time. I believe the problem lies in my inverter. It is a Magnum 2812, 2800W unit.

Any ideas? Thanks.
Do you have an EMS? A/C is not on the inverter.
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Old 05-24-2019, 09:07 PM   #9
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The inverter would only be the problem if your refrigerator runs off of it, the A/C doesn't run off of it.
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Old 05-24-2019, 10:29 PM   #10
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Yes, coach has EMS, and I have noticed the controller dropped to 108V coming in for short times today. 118-121V is normal here.
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Old 05-25-2019, 12:20 AM   #11
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108 volts you need to shut it down. That's too low of voltage to operate safely
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Old 05-25-2019, 03:23 AM   #12
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you don't have to shut it down. Your EMS is doing that for you. Tell the park of your problem. All is good. well, except for the low voltage. If you don't need the A/C you won't need to worry about anything. Perhaps move to a different site closer to the main electric service. check the ped voltage during an outage or low voltage reading.
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Old 05-25-2019, 04:29 AM   #13
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You may still have an inverter or battery problem.

When the EMS shuts down the power, the inverter should take over and run the fridge.

If the fridge works while driving, without the generator running, its wired thru the inverter and shouldn't shut down, unless you have the inverter off.
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Old 05-25-2019, 07:51 AM   #14
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IF you have an absorption fridge you take the vent panel off the fridge from the outside and run an extension cord to it directly from one of the other outlets on the pedestal. Eliminate that from the equation.
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