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Open Roads Forum  >  Class A Motorhomes  >  General Topics

 > Transfer switch popping every 15 seconds

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Tmuraca

Ithaca, NY

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Posted: 07/18/20 06:51am Link  |  Quote  |  Print  |  Notify Moderator

I’m plugged into a 30 amp pedastal and my transfer switch keeps popping. I checked all the wiring and it looks clean and nothing is loose. I tried unhooking power and running the generator and everything works fine, so this only happens on shore power. At the plug I have a progressive industries surge protector. Could this just be a faulty transfer switch?? Thanks for any help!!

Tmuraca

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Posted: 07/18/20 07:11am Link  |  Quote  |  Print  |  Notify Moderator

I should have added that I am in a 2014 Tiffin Allegro 36La and the transfer switch is TRC industries number 41260. I should also note that it will work fine for a few hours before it starts acting up

wolfe10

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Posted: 07/18/20 07:28am Link  |  Quote  |  Print  |  Notify Moderator

First thing is to verify that your shore power IS good. What is voltage when this happens as measured in the coach? If below 108 VDC, check at the pedestal. May be CG power issue or issue with your shore power cord or wiring to ATS.

At only one CG of at others?


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Tmuraca

Ithaca, NY

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Posted: 07/18/20 08:02am Link  |  Quote  |  Print  |  Notify Moderator

The voltage is fine and I have tried at 3 different plugs so far. All have been 30 amp so I have been using an adapter to plug my 50 amp surge guard at the pedastal. I am wondering if the surge guard could have gone bad and perhaps I should try plugging it in directly?

rgatijnet1

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Posted: 07/18/20 08:35am Link  |  Quote  |  Print  |  Notify Moderator

Transfer switches have been known for the individual wire connections coming loose. Make sure that NOTHING electrical is connected and then take the cover off of the transfer switch and tighten all of the connectors. This may solve your problem.

bob_nestor

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Posted: 07/18/20 09:17am Link  |  Quote  |  Print  |  Notify Moderator

rgatijnet1 wrote:

Transfer switches have been known for the individual wire connections coming loose. Make sure that NOTHING electrical is connected and then take the cover off of the transfer switch and tighten all of the connectors. This may solve your problem.


I'd also check the contact switches insidw the transfer switch. Normally a transfer switch is wired such that the default position is to prefer shore power and the contact switches inside are held in that position with springs. But if the contacts have a build-up of patina or they're pitted from arcing they might not make good contact. When this happens the junction can heat up and the switch could open. I'd also check to make sure the springs are still in good shape.

wolfe10

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Posted: 07/18/20 10:11am Link  |  Quote  |  Print  |  Notify Moderator

Is voltage still 120 VAC+/- IN THE COACH (not just at the CG outlet) when the clicking occurs OR when the ATS clicks do you loose 120 VAC to the coach?

Yes, surge protectors can fail, just as can ATS's and most other electric devices.

2naEagle

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Posted: 07/18/20 10:56am Link  |  Quote  |  Print  |  Notify Moderator

Make sure your electrical cord prongs are clean and shiny. Also put some NO-Ox on the prongs. See if that helps.


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MrWizard

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Posted: 07/18/20 03:44pm Link  |  Quote  |  Print  |  Notify Moderator

Xfr switch "popping"
This is not a circuit breaker exactly what do you mean by popping

50 amp RV
50 amp xfr switch
50 amp ems
30 am service

GG voltage is low
Or
Faulty ems
Does your ems display an error code when this happens

Are you letting the A/C cycle the compressor
Or cycle between two different rooftop A/C's
The start up surge will cause low voltage and the ems will trip, shutting you down


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wa8yxm

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Posted: 07/18/20 03:47pm Link  |  Quote  |  Print  |  Notify Moderator

What do you mean by "Popping" The unit you have contains MOV's and if they get over voltaged they can make like firecrackers (Been there when it happened. long story omitted)

Here are 3 links

Before you call

Trouble Shooting Guide

Brag sheet (Specs add)


Guessing you have either an open neutral or open ground or poor neutral/ground on the park side. Just a guess.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


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