Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-10-2008, 02:56 PM   #1
Winnie-Wise
 
dengraham's Avatar
 
Join Date: Sep 2005
Location: Crossville, Tennessee
Posts: 417
Okay, I'm hooked up to 50 AMP pole, I overload a circuit (micowave, tv, satelite, dvd, coffee pot, oven all at the same time. But, instead of a circuit breaker triping, the output breaker on the Dimension Inverter trips. Did tis twice??? Shuts down one side of the coach?? I need help understanding what is happening. Thanks in advance.
__________________
Dennis & Trish (and Sparky Doodle)
2013 Meridian 42E
2011 Ford Explorer
dengraham is offline   Reply With Quote
Old 11-10-2008, 09:14 PM   #2
Winnebago Master
 
MrTransistor's Avatar
 
Join Date: Jan 2004
Location: Albuquerque, NM
Posts: 504
Hello Dennis,

The explanation is here.

http://www.winnebagoind.com/diagram/...ire_158650.pdf

Even though you are connected to a 50 Amp. service, most all the outlets are connected after the inverter. All the loads that tripped the breaker are on one outlet or another and even though the inverter was in bypass the current still had to pass through the inverter circuit breaker. The AC, Washer/Dryer, Dishwasher, Refrigerator, and Engine heater are tied in before the inverter so they did not contribute to the tripped breaker and would have continued to operate.

So, you can get 50 Amps. plus 50 Amps. but not all of the 50 from the outlets, only 30.
__________________
Have Fun!! Mark & Donalda 04 Horizon 40WD no TOW 90,900+ miles and counting
Triumph Bonneville & Susuki S40 on the back
MrTransistor is offline   Reply With Quote
Old 11-11-2008, 12:13 PM   #3
Winnie-Wise
 
SteveG's Avatar
 
Join Date: Sep 2006
Location: Florida
Posts: 256
Hm... Dennis, are you saying that the 30 amp breaker that is located on the face of the Dimensions unit opened? And that neither the main or microwave circuit breaker on the Inverter Breaker Panel located on my unit at the end of the bed did not open?

Mark are you saying that the Inverter breaker panel cannot draw more then 30 amps because its main breaker is rated at 30 amps? So the design assumption is that even though the four 15 amps circuit breakers total 45 amps it is not likely that all the circuits will be drawing power at the same time? And that even though the individual 15 amp circuit might not exceed 15 amps if all four were pulling 15 amps the 30 amp main located in the inverter panel would open when the amperage exceeded 30 amps.

On my Dimensions unit the output breaker is 30 amps. According to the Dimensions book this CB trips to protect the Dimensions unit from an output short circuit or overload.

It is also interesting that when the Inverter is in the bypass mode (allowing normal 110VAC power to pass through the inverter to provide power to the house circuits)and the Dimensions 30 amp circuit breaker opens, I can not find anything in the Dimensions book that indicates there will be a warning light or error message that the Dimensions CB tripped. Their troubleshooting procedure does remind that the circuit breaker needs to be checked when power is lost.

Dennis, if your response is that the Dimensions 30 amp CB tripped before the 30 amp Inverter panel breaker then it would be interesting to give Dimensions a call to see if they can explain why it did that.

Our 2004 36G Journey wiring diagram is pretty close to the one Mark provided.

Thanks for posting this problem as it is helpful to study and understand how things work.
__________________
SteveG

'10 Phaeton 36 QSH-
SteveG is offline   Reply With Quote
Old 11-11-2008, 12:53 PM   #4
Winnebago Master
 
MrTransistor's Avatar
 
Join Date: Jan 2004
Location: Albuquerque, NM
Posts: 504
Hello Steve & Dennis,

Correct on all counts. It is very common practice to use what would seem to be an undersized breaker to in turn feed several other breakers. As in a house panel, it may be a 100 Amp. service and have a 100 Amp. main breaker but if you were to add up all the 15, 20, and 30 Amp. breakers installed you could have a total of much more than 200 Amps.

The reason this is so is because of a thing called ˜simultaneity' factor, that takes into account that not all circuits will be loaded to their maximum at the same time. There are charts that have been put together for just about every conceivable scenario. From multi-room X-Ray departments to manufacturing plants to houses. These same charts are used to size transformers and wiring that feed areas of houses.

As to which breaker tripped, it could just as easily have been the breaker that feeds the inverter. All breakers are designed and usually guaranteed to hold their rated current 100% or the time. But above that, say at 120% current, they could hold for 10 seconds or 10 minutes and still be in spec. Breakers also use a thermal device as well as electro magnetic to sense current so the ambient temperature affects when it will trip. We are connected to a 30 Amp. service and when it's cold, I have seen momentary currents as high as 42 Amps. for several seconds without the breaker tripping. In the heat of the summer, it will usually trip right away with as little as 32 Amps.

The inverters have a contactor inside that automatically switchs from the incoming line to the output if it senses line voltage and if not, to inverter output. So it doesn't mater whether the circuit breaker is located on the input side or output side of the inverter, it still has to protect either the inverter or the contactor's contacts which are usually rated for 30 Amps. To the user, it doesn't mater what part of the circuit the breaker is inserted into, just that there is a breaker on the inverter. It is usually on the output side since the input side should already be protected by an external 30 Amp. source.
__________________
Have Fun!! Mark & Donalda 04 Horizon 40WD no TOW 90,900+ miles and counting
Triumph Bonneville & Susuki S40 on the back
MrTransistor is offline   Reply With Quote
Old 11-11-2008, 06:40 PM   #5
Winnie-Wise
 
dengraham's Avatar
 
Join Date: Sep 2005
Location: Crossville, Tennessee
Posts: 417
Thank you Mr Transistor. You are right on and extremely helpful. As Steve suggests it does seem funny to have to run outside and push the button on the inverter instead of flipping a circuit breaker but I guess it was the first place to notice the problem. Thank you very much for your clear and consise explanation. I think the little ceramic heater was the "icing on the cake" that pulled it over, er out!
Safe travels to all.
__________________
Dennis & Trish (and Sparky Doodle)
2013 Meridian 42E
2011 Ford Explorer
dengraham is offline   Reply With Quote
Old 11-11-2008, 10:03 PM   #6
Winnebago Master
 
MrTransistor's Avatar
 
Join Date: Jan 2004
Location: Albuquerque, NM
Posts: 504
Thank you, I'm glad to help.
__________________
Have Fun!! Mark & Donalda 04 Horizon 40WD no TOW 90,900+ miles and counting
Triumph Bonneville & Susuki S40 on the back
MrTransistor is offline   Reply With Quote
Old 02-01-2009, 07:40 PM   #7
Winnebago Camper
 
Join Date: Dec 2008
Location: USA
Posts: 17
will repeated tripping of the output breaker case it to become weaker and weaker, seems like i cant turn on anything (microwave/convection, or heater) without it tripping.
kscouple52 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dimension Inverter/Charger failure SteveG Electrical | Charging, Solar and Electronics 18 01-17-2008 01:20 PM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.