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Old 05-30-2016, 06:14 PM   #1
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Converter Problems - Whats your thoughts?

I was recently on a trip. While plugged into a 30 amp plug (RV is 30 amp) I was running air con. coffee maker and my wife had here blow dryer going. All of a sudden we lost power (we had battery power only) I checked the breakers, none tripped. I have power where the 30 amp plug wires go into the converter none coming out at the breakers. I fired up my on board generator (toy hauler) approx. 30 seconds later I have full power. I turned the generator off no power again. I pulled the breaker box converter out of the wall to check it out. I am not sure what I did but I went and plugged the 30 amp cord back in and I have power again. I installed the breaker converter box back in its spot. I turn the air con. back on left for several hours and came back to the same problem.

Does this sound like a bad converter?
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Old 05-30-2016, 06:28 PM   #2
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You weren't very specific in post as to what power you lose, DC or AC or both? A bad converter shouldn't affect A/C power; even it it went bellyup and shorted a braker should have blown leaving the rest of camper with A/C power.

I'm thinking the coffee pot and A/C exceeded a breaker capacity. Could one have been partially blown?
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Old 05-30-2016, 06:31 PM   #3
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No. Converters just change 120 to 12v. Sound like a breaker issue either at pedistial or inside your unit or you have a power management system kicking off due to low voltage.


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Old 05-30-2016, 06:35 PM   #4
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Quote:
Originally Posted by rwtdct View Post
I was recently on a trip. While plugged into a 30 amp plug (RV is 30 amp) I was running air con. coffee maker and my wife had here blow dryer going.
You definitely exceeded 30 amps with those three items. You should have tripped either the RV's main breaker or the campgrounds pedestals 30 amp breaker.

These links may help you understand what you can have on (and thus must have off) in order to live within your 30 amp threshold. We all have to learn this eventually.

Also remember that Watts= Voltage X amps

or better yet that amps= watts/divided by volts

A 1500 watt hair dryer needs 12.5 amps just by itself.
12.5 amps = 1500watts/120 volts

Basic RV Electricity - RV Information (RV Maintenance)

and this will give you a better understanding of what the converter actually does

RV Converters and Amp Draw - RV Information (RV Maintenance)

Hope it helps

I do wonder about the campground pedestal. Did you turn off the circuit breaker and back on when you say you disconnected and reconnected after everything went off. You may have just tripped the breaker in the campground pedestal, and thus reset it when you were disconnecting/reconnecting your RV's power cord if you flipped it off and then back on....as you should have when disconnecting the cord.

Also campground pedestal breakers get weak over time from RV'ers exceeding their max potential and just the amount of times they are switched on/off. They may trip at less than 30 amps.
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Old 05-30-2016, 08:03 PM   #5
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Quote:
Originally Posted by TonyD View Post
You weren't very specific in post as to what power you lose, DC or AC or both? A bad converter shouldn't affect A/C power; even it it went bellyup and shorted a braker should have blown leaving the rest of camper with A/C power.

I'm thinking the coffee pot and A/C exceeded a breaker capacity. Could one have been partially blown?
I stated I had battery power only that would be DC. NO AC

I plug into shore power (at home now) 118.4 volts all the way to the breakers. No breaker is tripped. Why am I not getting power to Air con., Microwave, GFI, outlets.

Here is another thing. I turn my generator on and I am back to full power. So why do I have power with my on board generator not shore power?
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Old 05-30-2016, 08:13 PM   #6
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Originally Posted by rwtdct View Post
I stated I had battery power only that would be DC. NO AC

I plug into shore power (at home now) 118.4 volts all the way to the breakers. No breaker is tripped. Why am I not getting power to Air con., Microwave, GFI, outlets.

Here is another thing. I turn my generator on and I am back to full power. So why do I have power with my on board generator not shore power?
Sounds like you have a stuck or bad transfer switch. it has absolutely nothing to do with your converter. The transfer switch is stuck in the generator mode and won't switch back to shore power. Perhaps the contacts are arched over or bad, perhaps something else. Interesting that it take 30 seconds for your generator to come on line. This means that the relay is not stuck in generator mode but has to switch over after the 30 second delay, which is normal. The switch doesn't think you have shore power. That is where I would start to look.
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Old 05-30-2016, 08:26 PM   #7
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Sounds like you have a stuck or bad transfer switch.
X2

This may help explain it, and also why you want to make sure the A/C is off when transferring from shore power to generator.

http://www.rvtechmag.com/electrical/chapter4.php
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Old 05-30-2016, 09:47 PM   #8
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When I say no power I am talking AC. While having this problem I have never lost battery power DC.


So the first thing I did after my last post was to check my transfer switch. So I checked the two wire nuts connecting shore power (AC) to transfer switch, which also goes to my power inverter (its only connected when not plunged into shore power). I untwisted the nuts straighten the wires and reconnected. I plugged back into shore power and walah, I have AC power again. It doesn't make sense though. I had AC power on both sides of my breakers. Main breaker had power on one side when off and both sides when on. Other breakers had no power when main breaker was off and power when main breaker was on, but now AC power in the RV. So why would I have AC power at the breakers and no AC power in the RV, I rewire a couple wire nuts and still have AC power at the breakers and now it works again?? If it somehow reset something why would it not reset when unplugged and plugged shore power? I am puzzled.
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Old 05-30-2016, 10:01 PM   #9
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Originally Posted by ScottBrownstein View Post
Sounds like you have a stuck or bad transfer switch. it has absolutely nothing to do with your converter. The transfer switch is stuck in the generator mode and won't switch back to shore power. Perhaps the contacts are arched over or bad, perhaps something else. Interesting that it take 30 seconds for your generator to come on line. This means that the relay is not stuck in generator mode but has to switch over after the 30 second delay, which is normal. The switch doesn't think you have shore power. That is where I would start to look.
I was hooked up to shore power when the problem started. Going through the process of elimination I decided to try the generator and it worked. There has always been an approx. 30 second delay after turning the generator on. I did get it going but I am still puzzled. Read my post above this one.

Thanks for all replies, If anyone else may have suggestion what it may please reply.

I am pretty mechanically inclined in all aspects, common sense would say don't go from shore power to generator with A/C, microwave, blow dryer, power tools etc. or visa versa.
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Old 05-31-2016, 11:03 AM   #10
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What is your voltage at the power cable where it comes into your unit? Is there a 12 x 6 black box that says electrical management on it?


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