How to overload a Magnum 2812 inverter and forget where the fuse is

December 06, 2010, 12:23:28 pm

This morning at 4am I could not sleep and it was bugging me to no end that I may have hooked up the new inverter wrong. I went the entire weekend after overloading the inverter running a coffee pot, microwave and hairdryer (takes three people not communicating which each to do this) with no charger for the rest of the weekend, except for running the big C12 Cat engine. Read my previous posts. Went 36 hours on (4)8D batteries running the residential refrig and hydro hot furnace in 22 degree whether before the batteries hit 12 volts (no load).
I was thinking of all the post where some remote fuse had cost allot of problems like $1000 towing bills and thought about all the fuses I had pulled to find the problem so that could not be the problem but what if it was. Then the lights went on at 4 am.
There is small push pop button fuse on the side of the inverter that is on the back side of my installed inverter that I would not have know about except for my subconscious kicked in at 4 am in the morning and reminded me of this. I had forgot about this little 1/4 inch round button fuse that is flush with the inverter and hardly noticable. The Manual does not indicate it as a trouble shooting item.
Just went out the motor home reached over the back side of the inverter and it was popped out. I guess it blew when the over load occurred. I have never owned a motorhome with all this electronic stuff on it and inverters are all new to me. Inverter still worked the whole weekend but the generator was not charging the batteries through the inverter due to this one little push button fuse. The charger stitch (button) on the remote would not light up wehn pushed the whole weekend.
The good news it that the residential refrigerator does not draw many amps and probably could have gone the entire weekend on one charge if it were not the freezing temps and the furnace, microwaves and coffee put running.
Well that saved me from another trip to the back doctor by not having to take out all those 8D batteries to pull the inverter.

Another lesson learned.

Happy camper

Dallas 2004 intrigue ovation C12 11688

Re: How to overload a Magnum 2812 inverter and forget where the fuse

Reply #1 – December 08, 2010, 08:31:01 am

Yahoo Message Number: 66284

Thanks for sharing, Those little pop out Breaker's are good but the Inverter maker's for cost reasons will buy the cheapest for the bottom line. I know as they get older and bumping down the road real world here this can happen but new and sitting in one place is another color. Keep us posted as you keep it simple for everyone. Helping a fellow CC owner years ago his power tech. generator generator breakers tripped now and then. He and I called CC and they sent new breakers and I installed them and still the same problem! I then got my A/C Amprobe and followed him around his coach and with running his normal house load's his electric coffie pot was the problem as the total line amps exceeded the breaker! I said your just overloading that circuit! He shed some house load and used the electric coffe pot and no more problem. Funny at the time I had a Fifthwheel and he has the same CC Allure a year newer then mine now. Again thanks for sharing! Ken 99 Allure 30356

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