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Old 10-22-2018, 10:10 PM   #1
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Partial power loss!

After 65 days of boondocking and travel in our 2011 17B, we pulled in to a full hookups site yesterday. Everything worked perfectly including our account. It's 90+ so that's important to us. We have had hookups before and no prob. Everything worked.

This evening we lost 2 lights on the driver side plus the light and fan at the hood. I've checked the breakers and fuses at the power center....all good. All other lights are working as is the pump........

Help? Advice Comments?

Thank you all and mucho amore.
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Old 10-22-2018, 10:35 PM   #2
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Sorry I am not more familiar with your trailer but it’s sounds like you might have tripped your ground fault plug. Sometimes they hook stuff up after the plug to save running another AC line. Worth a check. If your not familiar with what I am talking about...it is a little push button switch in the center of a plug... most likely the plug outside.
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Old 10-22-2018, 10:37 PM   #3
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A reasonable guess would be that everything which is not working is connected together, on one circuit. If the fuse for that circuit is good (as it appears to be), then a wiring connection has presumably failed somewhere between the power centre and the first non-working item. A broken connection can be on the +12 volt side or the "ground" side. There shouldn't be any buried connections - they should all be in the power centre or at one of the devices (lights, etc), but there might be a hidden one anyway. It's likely a matter of tracing wires and checking with meter or tester at each point the wiring is accessible.
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Old 10-22-2018, 10:39 PM   #4
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Quote:
Originally Posted by Eggscape View Post
Sorry I am not more familiar with your trailer but it’s sounds like you might have tripped your ground fault plug. Sometimes they hook stuff up after the plug to save running another AC line. Worth a check. If your not familiar with what I am talking about...it is a little push button switch in the center of a plug... most likely the plug outside.
But none of the listed items (lights, fan) are 120 volts AC; they're all 12 volt DC stuff which wouldn't be affected by a tripped Ground Fault Circuit Interrupter.
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Old 10-22-2018, 10:45 PM   #5
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Sherm, do you have the EMS system? Maybe an over or under voltage condition?
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Old 10-22-2018, 10:56 PM   #6
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Sherm, do you have the EMS system? Maybe an over or under voltage condition?
Our EMS would trip all the time showing a high voltage fault ( Before Recalibration)
The 120 VAC in the trailer would shut down , the 12VDC system continued to work as normal .
As Brian BP posted it sounds like a defective splice / connection .
Hopefully all the splice were made at the devices and not in the middle of a run .
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Old 10-22-2018, 11:39 PM   #7
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I agree with Ed. Try a simple thing first - Check your GFCI to see if it tripped. It's usually on an exterior plug.
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Old 10-22-2018, 11:58 PM   #8
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Try a simple thing first - Check your GFCI to see if it tripped. It's usually on an exterior plug.
It's easy to check the GFCI, but how could that affect 12 V DC lights and a 12 V DC fan?
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Old 10-23-2018, 12:00 AM   #9
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Sherm, do you have the EMS system? Maybe an over or under voltage condition?
Whether there is under voltage on the 120 V AC supply, over voltage on the 120 V AC supply, or a shutdown of 120 V AC power by the EMS for any other reason, how can the supply of 120 V AC power affect some (and not others) of the 12 V DC devices in the trailer?
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Old 10-23-2018, 12:08 AM   #10
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yeah, I'd suggest instead, checking the DC fuses.
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