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Old 11-28-2021, 09:10 PM   #1
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Join Date: Feb 2021
Location: South Jordan, UT
Posts: 102
Shore power/surge guard question

I had an issue a couple of nights ago with shore power and my Surge Guard 34560 at an RV park. I connected to the 50A service, however, it would shut off after a few minutes. No breakers thrown. Happened 3-4 times. Would come back on after flipping the switch on the pedestal off and back on. The last time it worked, my furnace was running but when I turned on any of the lights, the blower would "dip" or seemed to slow down some. Each time, my surge protector "Line 1" and "Line 2" lights would come on. Eventually, just "Line 2", and no shore power at all. Park maintenance came out and tested my cord and the pedestal with a test light (not multimeter....) and they both tested ok. I moved to another spot, same problem. Because it was 20 degrees at the park, I ran my generator for the furnace. Everything works perfectly with the generator. The last time I hooked up to shore power was at a campground in June, and it was fine there.
I'm not sure I understand what the lights on the surge guard indicate. There were 3 other campers at this park, and they seemed to be fine. It seems that the problems lie somewhere between the pedestal and the transfer switch/surge guard. Any ideas what I should look into first? Advice for testing without access to a 50A power source?
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Old 11-28-2021, 10:17 PM   #2
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You can't test voltage with a light.

You may be getting 100 volts and that kicks out the surge guard.
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Old 11-28-2021, 10:48 PM   #3
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Surge Guard 34560
Trips power to RV on LO and HI AC Voltages

Being 50A is looks at both Hot Legs from Power Pedestal Receptacle
4 Lights on it
Power ON (Input Power...should be ON)
Caution when Flashing (indicates time delay, mis-wiring, fault etc)
L1 Voltage (Green/OK --- RED/Lo or Hi Voltage trip)
L2 Voltage (Green/OK --- RED/Lo or Hi Voltage trip)

Normal Power ON and L1/L2 Green

Being hardwired it 'looks' at Input Voltage from Receptacle thru RV Power Cord up to Surge Guard

LO AC Voltage supply so Surge Guard tripped power to RV
*Furnace and Lighting is DC Voltage from battery so battery voltage must be low also due to lack of Charging/Maintaining Battery via AC Power
Is it time for YOUR Medication or Mine?
Dodge 3500 w/Tractor Motor & NUWA 5vr
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Old 11-29-2021, 01:02 AM   #4
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Location: South Jordan, UT
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Good info, thank you! Still very new to the "house" side of all this, learning a lot. Didn't think of furnace/lighting being DC by way of battery and AC. It's topped off fully now, I always check these things when it goes back into storage.
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power, shore power, surge guard

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