Blowing living / dining room fuse

[jtdebi22]

Hi everyone. Thank you in advance for any assistance that can be provided. We’re new owners of a 2026 252RL. Every time we disconnect the main surge protector and 50 amp cord from a campground, when we arrive at the next campground our 12 volt fuse is blown. We have replaced it 6 times already.

What is wrong, that we keep blowing this same fuse?

Debi and JT

 

[M and E]

If you are camping, and have extra fuses, turn off the breaker first then unplug the surge protector. That would be my first test. MAybe you have tried that already. If so, did the fuse still blow?

 

[Oregon_Camper]

Hi everyone. Thank you in advance for any assistance that can be provided. We’re new owners of a 2026 252RL. Every time we disconnect the main surge protector and 50 amp cord from a campground, when we arrive at the next campground our 12 volt fuse is blown. We have replaced it 6 times already.

What is wrong, that we keep blowing this same fuse?

Debi and JT

Does this still happen if your turn off the 50 amp shore power breaker, prior to disconnecting?

 

[jtdebi22]

Does this still happen if your turn off the 50 amp shore power breaker, prior to disconnecting?

Yes it does.

 

[M and E]

Hi everyone. Thank you in advance for any assistance that can be provided. We’re new owners of a 2026 252RL. Every time we disconnect the main surge protector and 50 amp cord from a campground, when we arrive at the next campground our 12 volt fuse is blown. We have replaced it 6 times already.

What is wrong, that we keep blowing this same fuse?

Debi and JT

Which 12 V fuse is blown?

 

[jtdebi22]

I’m sorry, I don’t understand the above responses. Any idea what we should do/whats wrong?

 

[Oregon_Camper]

Have you tried connecting/disconnecting power without the surge protector? BTW...do you mean EMS? Like a Watchdog system when you say "surge protector"?

 

[M and E]

I’m sorry, I don’t understand the above responses. Any idea what we should do/whats wrong?

Yes. I have an idea of what could be wrong but we need more info. Do this.

Make sure the fuse that is blowing is good.

Connect your power at a campground or if you have a 50A outlet at home.

Check the fuse.

If the fuse has not blown, at the pedestal where your 50A male plug is at, leave it plugged in, turn off the breakers there, at the pedestal.

Check the fuse.

If the fuse is still good, not blown, turn the breakers back on.

Check the fuse.

Without turning off the breakers at the pedestal where your 50A cable is plugged in, just unplug it with the breaker on.

Check the fuse. If it is blown we can move on to the next steps.

If it is not blown, meaning it happens after you disconnect and while you are towing, and only while you are on 12V power, the answer is easier.

The fuse that is blowing, the one you replaced 6 times, what circuit/device does it protect? Lights? 12V fridge? Something else? That can tell us a lot. What doesn't work?

 

[BryanValRox]

Great advice Mike, it certainly would be helpful to determine the point at which it blows.

 

[M and E]

Yes it does.

Sorry. I missed this post. So regardless of the breaker being on or off when you disconnect your 50A cable from the pedestal, the fuse blows. Is that correct? The next question I have is are you checking the fuse before you leave the campground or when you arrive at the next one? If it is blown immediately after you disconnect vs. while towing it will tell us more about where you can check for issues. It could be something as simple as a hot wire that is chaffed and it makes contact while you are underway…just as an example. If happens on disconnect, you’re going to be pretty well served by submitting a warranty claim if the obvious/easy does not correct the problem.